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How-to extend a root LVM partition online

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Extend a root LVM partition online</div>
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There is also a quick remedy for the emergency situation when your root partition runs out of disk space. There is a feature specific to ext3 and ext4 that can help the goal of resolving the full disk situation. Unless explicitly changed during filesystem creation, both by default reserve five percent (5%) of a volume capacity to the superuser (root). 
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vg_main-lv_root
 ext4 8.4G 8.0G 952K 100% /
tmpfs tmpfs 499M 0 499M 0% /dev/shm
/dev/vda1 ext4 485M 33M 428M 8% /boot

# dumpe2fs /dev/vg_main/lv_root | grep 'Reserved block count'
dumpe2fs 1.41.12 (17-May-2010)
Reserved block count: 111513</pre>
It turned out 111513 of 4KB blocks were reserved for the superuser, which was exactly five percent of the volume capacity. 
 
How to enable it? 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># tune2fs -m 0 /dev/vg_main/lv_root 
tune2fs 1.41.12 (17-May-2010)
Setting reserved blocks percentage to 0% (0 blocks)
# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vg_main-lv_root
 ext4 8.4G 8.0G 437M 95% /
tmpfs tmpfs 499M 0 499M 0% /dev/shm
/dev/vda1 ext4 485M 33M 428M 8% /boot</pre>
 
Now that we have some free space on the root partition to work on we can extend the LVM partition: 
 
 
Create a new partition of appropriate size using fdisk 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">fdisk /dev/sdb1</pre>
 
This is a key sequence on the keyboard to create a new LVM type (8e) partition: 
 
n, p, 1, enter (accept default first sector), enter (accept default last sector), t, 8e, w 
 
 
Create a new Physical Volume 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># pvcreate /dev/sdb1
 Writing physical volume data to disk "/dev/sdb1"
 Physical volume "/dev/sdb1" successfully created</pre>
Extend a Volume Group 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># vgextend vg_main /dev/sdb1
 Volume group "vg_main" successfully extended</pre>
Extend your LVM 
 
 
- extend the size of your LVM by the amount of free space on PV 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># lvextend /dev/vg_main/lv_root /dev/sdb1
 Extending logical volume lv_root to 18.50 GiB
 Logical volume lv_root successfully resized</pre>
- or with a given size 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">lvextend -L +10G /dev/vg_main/lv_root</pre>
 
Finally resize the file system online 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># resize2fs /dev/vg_main/lv_root
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_main/lv_root is mounted on /; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 2
Performing an on-line resize of /dev/vg_main/lv_root to 4850688 (4k) blocks.
The filesystem on /dev/vg_main/lv_root is now 4850688 blocks long.</pre>
Now we can set the reserved blocks back to the default percentage - 5% 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">tune2fs -m 5 /dev/mapper/vg_main-lv_root
Results:

# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vg_main-lv_root
 ext4 19G 8.0G 9.4G 46% /
tmpfs tmpfs 499M 0 499M 0% /dev/shm
/dev/vda1 ext4 485M 33M 428M 8% /boot</pre>
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How-to extend a root LVM partition online

Extend a root LVM partition online There is also a quick remedy for the emergency situation when your root partition runs out of disk s...

Adobe Flash Out-of-Bounds Read in Getting TextField Width Exploit (0DAY)

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Adobe Flash Out-of-Bounds Read in Getting TextField Width Exploit (0DAY)</div>
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<table class="exploit_list" style="background-color: rgb(239, 239, 239) !important; border-radius: 3px !important; border-spacing: 1px; border: 1px solid rgb(221, 221, 221) !important; box-sizing: border-box; color: #666666; font-family: "Open Sans", sans-serif; font-size: 14px; margin: 10px 0px; padding: 1px !important; width: 583px;"><tbody style="box-sizing: border-box;">
<tr style="background-color: rgb(248, 248, 248) !important; box-sizing: border-box;"><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;"> </td><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Author: Google Security Research</td><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Published: 2017-05-17</td></tr>
<tr style="background-color: rgb(248, 248, 248) !important; box-sizing: border-box;"><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">CVE: CVE-2017-3064</td><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Type: Dos</td><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Platform: Multiple</td></tr>
<tr style="background-color: rgb(248, 248, 248) !important; box-sizing: border-box;"><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Aliases: N/A</td><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Advisory/Source: <a class="external" href="https://bugs.chromium.org/p/project-zero/issues/detail?id=1211" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; outline: 0px; text-decoration-line: none; transition-duration: 0.3s; transition-property: background-color, box-shadow, border, color, opacity, transform;" target="_blank">Link</a></td><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Tags: Out Of Bounds</td></tr>
<tr style="background-color: rgb(248, 248, 248) !important; box-sizing: border-box;"><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;"> </td><td style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Exploit: <a href="https://www.exploit-db.com/download/42019" style="background-color: transparent; box-sizing: border-box; color: #337ab7; outline: 0px; text-decoration-line: none; transition-duration: 0.3s; transition-property: background-color, box-shadow, border, color, opacity, transform;"><img alt="Download Exploit Code" border="0" src="https://www.exploit-db.com/wp-content/plugins/edb/ifc/edb-download.png" style="border: 0px; box-sizing: border-box; height: auto; max-width: 100%; vertical-align: middle;" title="Download Exploit Code" /> Download </a></td><td colspan="2" style="border-bottom: 1px solid rgb(232, 232, 232); border-left-color: rgb(232, 232, 232); border-right-color: rgb(232, 232, 232); border-top-color: rgb(232, 232, 232); box-sizing: border-box; padding: 5px 10px;">Vulnerable App: N/A</td></tr>
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 <div class="line number1 index0 alt2" style="background: none white !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: #666666; direction: ltr !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; font-size: 14px; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px 1em !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; white-space: pre-wrap !important; width: auto !important;">
<code class="text plain" style="background: none !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: black !important; direction: ltr !important; display: inline !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace !important; font-size: 1em !important; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important;">Source: <a href="https://bugs.chromium.org/p/project-zero/issues/detail?id=1211" style="background: none !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: black !important; direction: ltr !important; float: none !important; font-size: 1em !important; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px !important; position: static !important; right: auto !important; text-decoration-line: none; top: auto !important; transition-duration: 0.3s; transition-property: background-color, box-shadow, border, color, opacity, transform; vertical-align: baseline !important; width: auto !important;">https://bugs.chromium.org/p/project-zero/issues/detail?id=1211</a></code></div>
<div class="line number2 index1 alt1" style="background: none white !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: #666666; direction: ltr !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; font-size: 14px; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px 1em !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; white-space: pre-wrap !important; width: auto !important;">
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<div class="line number3 index2 alt2" style="background: none white !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: #666666; direction: ltr !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; font-size: 14px; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px 1em !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; white-space: pre-wrap !important; width: auto !important;">
<code class="text plain" style="background: none !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: black !important; direction: ltr !important; display: inline !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace !important; font-size: 1em !important; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important;">The attached swf causes an out-of-bounds read in getting the width of a TextField.</code></div>
<div class="line number4 index3 alt1" style="background: none white !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: #666666; direction: ltr !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; font-size: 14px; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px 1em !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; white-space: pre-wrap !important; width: auto !important;">
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<div class="line number5 index4 alt2" style="background: none white !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: #666666; direction: ltr !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; font-size: 14px; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px 1em !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; white-space: pre-wrap !important; width: auto !important;">
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<div class="line number6 index5 alt1" style="background: none white !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: #666666; direction: ltr !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; font-size: 14px; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px 1em !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; white-space: pre-wrap !important; width: auto !important;">
<code class="text plain" style="background: none !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: black !important; direction: ltr !important; display: inline !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace !important; font-size: 1em !important; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important;">Proof of Concept:</code></div>
<div class="line number7 index6 alt2" style="background: none white !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: #666666; direction: ltr !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; font-size: 14px; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px 1em !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; white-space: pre-wrap !important; width: auto !important;">
<code class="text plain" style="background: none !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: black !important; direction: ltr !important; display: inline !important; float: none !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace !important; font-size: 1em !important; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important;"><a href="https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/42019.zip" style="background: none !important; border-radius: 0px !important; border: 0px !important; bottom: auto !important; box-sizing: content-box !important; color: black !important; direction: ltr !important; float: none !important; font-size: 1em !important; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; padding: 0px !important; position: static !important; right: auto !important; text-decoration-line: none; top: auto !important; transition-duration: 0.3s; transition-property: background-color, box-shadow, border, color, opacity, transform; vertical-align: baseline !important; width: auto !important;">https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/42019.zip</a></code></div>
</div>

Adobe Flash Out-of-Bounds Read in Getting TextField Width Exploit (0DAY)

Adobe Flash Out-of-Bounds Read in Getting TextField Width Exploit (0DAY) Author : Google Security Research Published : 2017-05-17 C...

How to replace MySQL with MariaDB in cpanel

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Replace MySQL with MariaDB in cpanel</div>
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<a href="http://www.hackthesec.co.in/search/label/cPanel">cPanel</a> is a Linux-based web hosting control panel that provides a graphical interface and automation tools designed to simplify the process of hosting a web site.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBQywZi06TXKZwFsQs3sass_IJeTf3TED7JAhV-aVU3Nobbr9RBdFFwz2EXi8X0XmllWQiIZ88mA5Rg_Qubwf7LOxE2b9cFJQQxL6Uy4qW_ujuMRZHWGugVEnVFgzLK3IpMg-5GACfKw_D/s1600/MySQL-to-MariaDB.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="273" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBQywZi06TXKZwFsQs3sass_IJeTf3TED7JAhV-aVU3Nobbr9RBdFFwz2EXi8X0XmllWQiIZ88mA5Rg_Qubwf7LOxE2b9cFJQQxL6Uy4qW_ujuMRZHWGugVEnVFgzLK3IpMg-5GACfKw_D/s400/MySQL-to-MariaDB.jpg" width="400" /></a></div>
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<a href="http://www.hackthesec.co.in/search/label/MariaDB">MariaDB </a>is a community-developed fork of the MySQL relational database management system intended to remain free under the GNU GPL. It is notable for being led by the original developers of <a href="http://www.hackthesec.co.in/search/label/Mysql">MySQL</a>, who forked it due to concerns over its acquisition by Oracle.</div>
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Make sure to save all existing data just in case there are any issues.</div>
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<script async="" src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>

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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">cp -Rf /var/lib/mysql /var/lib/mysql-old
mv /etc/my.cnf /etc/my.cnf-old</pre>
Disable the targets so cPanel no longer handles MySQL updates 
 
 
The following will mark the versions of MySQL we distribute as uninstalled so they are no longer maintained by cPanel/WHM 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">/scripts/update_local_rpm_versions –edit target_settings.MySQL50 uninstalled
/scripts/update_local_rpm_versions –edit target_settings.MySQL51 uninstalled
/scripts/update_local_rpm_versions –edit target_settings.MySQL55 uninstalled</pre>
Remove existing MySQL RPM’s so theres a clean slate for MariaDB 
 
 
The below command will uninstall the MySQL RPM’s! 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">/scripts/check_cpanel_rpms –fix –targets=MySQL50,MySQL51,MySQL55</pre>
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Create a yum repository for MariaDB</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">vi /etc/yum.repos.d/MariaDB.repo</pre>
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Place the following inside of it depending on the DISTRO or you can download the repo details from this bellow link - </div>
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(https://downloads.mariadb.org/mariadb/repositories/):</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/5.5.29/centos6-amd64/
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1</pre>
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Remove php from the /etc/yum.conf file then run the following commands</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">yum install MariaDB-server MariaDB-client MariaDB-devel
/etc/init.d/mysql start
mysql_upgrade
/etc/init.d/mysql restart</pre>
Add php back to the /etc/yum.conf file to ensure future php updates don't get clobbered 
 
 
Rebuild easyapache/php to ensure modules are intact/working 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">/scripts/easyapache –build</pre>
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How to replace MySQL with MariaDB in cpanel

Replace MySQL with MariaDB in cpanel cPanel is a Linux-based web hosting control panel that provides a graphical interface and automa...

How to Install cockpit on Ubuntu 16.04

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Install cockpit on Ubuntu 16.04</div>
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Cockpit. A remote manager for GNU/Linux servers. Cockpit is a server manager that makes it easy to administer your GNU/Linux servers via a web browser.</div>
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Cockpit helps make linux system administrator, system maintainers and DevOps easy to manage their server and to perform simple tasks, such as administering storage, inspecting journals, starting and stopping services and more. </div>
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You can monitor and administer several servers at the same time. Just add them with a single click and your machines will look after its buddies.</div>
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 </div>
MY LAB SETUP 
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operating system – Ubuntu 16.04 server 
 
IP Address – 172.17.56.101/24 also i am using my aws live domain name 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo add-apt-repository ppa:cockpit-project/cockpit</pre>
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After adding the repository execute the bellow command from your terminal</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo apt-get update</pre>
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After completed the update process run the bellow command for install the cockpit</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">sudo apt-get install cockpit</pre>
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After complete installation just start and enable the service through bellow commands</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">systemctl start cockpit.socket
systemctl enable cockpit.socket
</pre>
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Cockpit by default runs on port 9090,therefore if firewall is enabled,allow the port by executing the following command:</div>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">ufw allow 9090/tcp</pre>
Now go to your browser and log on using your hostname or IP address in the format similar to one below: 
 
 
https://<ip address>:9090 or https://<hostname>:9090 
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjDC498P18R1533axnTLmAa0J2pWTHVazF_cPrCr_jLdEeiNXZ07-WGNXiSV4DMSIz7-MZc0qs7na0qkeOfCD8JPz5QwfC08iWVfAlym2V37WyubSlhBRrY8zqislUd56zYhFBOuFm1ubm6/s1600/cockpit_login.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjDC498P18R1533axnTLmAa0J2pWTHVazF_cPrCr_jLdEeiNXZ07-WGNXiSV4DMSIz7-MZc0qs7na0qkeOfCD8JPz5QwfC08iWVfAlym2V37WyubSlhBRrY8zqislUd56zYhFBOuFm1ubm6/s1600/cockpit_login.png" /></a></div>
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Now, we'll be asked to enter the login details in order to enter into the dashboard. Here, the username and password is the same as that of the login details we use to login to our linux server. After we enter the login details and click on Log In button, we will be welcomed into the Cockpit Dashboard.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQvJUc8HFWApb6PyNDUy3-GnmULOEj-G9ovR-5eXqApzkBDsKoiyvUYHR-0n2ZcJ6lNeEAq0Z6FWc4Mci96wOqAXdjDyQuDyD9ByS-7RXhWFGtaUJYVDnHmszTGyS641dlJtUlZGEkFrE2/s1600/cockpit.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQvJUc8HFWApb6PyNDUy3-GnmULOEj-G9ovR-5eXqApzkBDsKoiyvUYHR-0n2ZcJ6lNeEAq0Z6FWc4Mci96wOqAXdjDyQuDyD9ByS-7RXhWFGtaUJYVDnHmszTGyS641dlJtUlZGEkFrE2/s1600/cockpit.png" /></a></div>
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How to Install cockpit on Ubuntu 16.04

Install cockpit on Ubuntu 16.04 Cockpit. A remote manager for GNU/Linux servers. Cockpit is a server manager that makes it easy to adm...

How to install Latest VirtualBox Version In Debian/Ubuntu/Linux Mint

How to install Latest VirtualBox Version In Debian/Ubuntu/Linux Mint

VirtualBox Version In Debian/Ubuntu/Linux Mint VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as...

How to Install and Configure Nextcloud on CentOS 7 / RHEL 7

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Install and Configure Nextcloud on CentOS / RHEL 7 
 
Nextcloud is functionally very similar to the widely used Dropbox, with the primary functional difference being that Nextcloud is free and open-source, and thereby allowing anyone to install and operate it without charge on a private server.  
 
In contrast to proprietary services like Dropbox, the open architecture allows adding additional functionality to the server in form of so-called applications. 
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcCnuhnD5JV7hXxzNrLUGJBFH-PKLY7ZsM2-1VbEkPN_eAeh9DL0cSL4wpvR78lvHl1wFC8KR1fH0IwRLrfsBqb6u3mCUK7-MlaOt4jbni9Rbg1Rvt6BX4HXeBR_sC6ljsCd2TwTqxoi3l/s1600/nextcloud-hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcCnuhnD5JV7hXxzNrLUGJBFH-PKLY7ZsM2-1VbEkPN_eAeh9DL0cSL4wpvR78lvHl1wFC8KR1fH0IwRLrfsBqb6u3mCUK7-MlaOt4jbni9Rbg1Rvt6BX4HXeBR_sC6ljsCd2TwTqxoi3l/s1600/nextcloud-hackthesec.co.in.jpg" /></a></div>
 
Nextcloud is an actively maintained fork of ownCloud. 
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Some of the Key features of Nextcloud are listed below: 
<div>
<ul style="text-align: left;">
<li>File access & sharing </li>
<li>Security & control </li>
<li>Mobile & desktop clients  </li>
<li>External storage </li>
<li>Calendar & Contacts  </li>
<li>Secure audio & video calls</li>
<li>Collabora Online Office</li>
<li>Videos of Nextcloud in action</li>
</ul>
<div>
Requirement to Install NextCloud on RHEL AND CENTOS</div>
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<div>
 </div>
Minimum of 512 MB RAM 
Web Server : Apache (httpd) / Nginx 
Database Server : MariaDB / MySQL / PostgreSQL 
 
PHP 5.4 + 
 
Installation 
======== 
Use the below yum command to install Apache Web Server (httpd), PHP packages and its other dependent packages. 
 
In the default CentOS and RHEL repositories PHP 5.4 packages are available 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; color: white; font-family: monospace, serif; font-size: 14px; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">yum install httpd php php-mysql sqlite php-dom php-mbstring php-gd php-pdo php-json php-xml php-zip php-gd curl php-curl php-mcrypt php-pear</pre>
Start and startup enable apache web service using this command 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">systemctl start httpd ; systemctl enable httpd</pre>
MariaDB database for Nextcloud 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">yum install -y mariadb-server mariadb</pre>
 
Start and startup enable MariaDB service using this command 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">systemctl start mariadb; systemctl enable mariadb</pre>
For set MariaDB root password use the following command 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">mysql_secure_installation</pre>
After completed the MariaDB installation just create a database for next-cloud application for me my database name is "nextcloud_db". 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@nextcloud ~]# mysql -u root -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 10
Server version: 5.5.47-MariaDB MariaDB Server
Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> create database nextcloud_db;
Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]></pre>
Create a database user (nxtuser) and grant all the privileges to the user on the database "nextcloud_db" 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">MariaDB [(none)]> grant all on nextcloud_db.* to 'nxtuser'@'localhost' identified by 'Nextcloud@123#';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> exit
Bye
[root@nextcloud ~]#</pre>
Download the latest version of NextCloud 
 
First Install two packges on your server using bellow command 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">yum install wget bzip2 -y</pre>
After that download the file from nextcloud official website - <a href="https://download.nextcloud.com/server/releases/">ClickHere</a> 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">wget https://download.nextcloud.com/server/releases/nextcloud-9.0.53.tar.bz2</pre>
When your download is complete just extract the downloaded "nextcloud-9.0.53.tar.bz2" file to Web Server document root (/var/www/html) using bellow command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">tar -jxpvf nextcloud-9.0.53.tar.bz2 -C /var/www/html/</pre>
Set the required permissions on nextcloud directory and its sub directories and files 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">chown -R apache:apache nextcloud /var/www/html/nextcloud</pre>
Open the ports in firewall for nextcloud (or you can stop the firewall) using bellow command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">[root@nextcloud ~]# firewall-cmd --permanent --zone=public --add-service=http
[root@nextcloud ~]# firewall-cmd --permanent --zone=public --add-service=https
[root@nextcloud ~]# firewall-cmd --reload</pre>
In my Case I am putting selinux in disabled mod  using below command you can use it as permissive mod 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">setenforce 0</pre>
For Permanently disabled edit the following line and find this line"SELINUX=enforcing" to disabled 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">vi /etc/sysconfig/selinux</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
# targeted - Targeted processes are protected,
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
</pre>
<div>
 </div>
Now Access nextCloud portal from Web Browser 
 
After Complete the nextcloud installation you can access it from your web browser using your system ip or server ip 
 
In my case my server ip is - 192.168.2.251 
 
Specify the user name as admin and password that you want to set, Select the Database type as MariaDB and mentioned the database name, database user and its credentials. Once you’re are done with settings then click on finish Setup. 
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdUrqikKS0fdC9vlvzf9cX3bWfHm71ek6WelCDrecpcoLHugEpivoFl-Qhw5vVh5XP2fAWp0YrzONCRJrGDdgCfp03W2YewPc2SzHQ_CZwyyXnekMxKGxBGYZh94QRMM4Ns1uniGvdNm3P/s1600/nextcloud-gui-installation.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdUrqikKS0fdC9vlvzf9cX3bWfHm71ek6WelCDrecpcoLHugEpivoFl-Qhw5vVh5XP2fAWp0YrzONCRJrGDdgCfp03W2YewPc2SzHQ_CZwyyXnekMxKGxBGYZh94QRMM4Ns1uniGvdNm3P/s1600/nextcloud-gui-installation.jpg" /></a></div>
 
Change the upload file size limit for nextcloud and restart the apache service 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">vi /etc/php.ini
============================
post_max_size = 30M
upload_max_filesize = 30M</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">systemctl restart httpd</pre>
Now start uploading the files and share with your contacts and whatever you want 
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2PxEvhX1ArtRP5Fdy3pFhPQ8HeBKSsjGmEkn_A5A__-5WpoUcVJyaRfNioIJeS2gOK56ZBrqgZtA6oCilfDIimiMbdvu7ethxJtJXahn6xLwSeUsd7hiRGlNXTBIglUxhh9kh-QGR4n8N/s1600/nextcloud.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2PxEvhX1ArtRP5Fdy3pFhPQ8HeBKSsjGmEkn_A5A__-5WpoUcVJyaRfNioIJeS2gOK56ZBrqgZtA6oCilfDIimiMbdvu7ethxJtJXahn6xLwSeUsd7hiRGlNXTBIglUxhh9kh-QGR4n8N/s1600/nextcloud.png" /></a></div>
 
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 </div>

How to Install and Configure Nextcloud on CentOS 7 / RHEL 7

Install and Configure Nextcloud on CentOS / RHEL 7 Nextcloud is functionally very similar to the widely used Dropbox, with the primary fu...

Enabling email authentication (SPF and DKIM) for all existing accounts – cPanel/WHM

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<h1 class="post-title entry-title" style="background-color: white; border: 0px; font-family: Raleway, Arial, sans-serif; font-stretch: inherit; font-variant-numeric: inherit; letter-spacing: -1px; line-height: 1.3em; margin: 0px 0px 10px; padding: 0px; text-align: center; vertical-align: baseline; word-wrap: break-word;">
Enabling email authentication (SPF and DKIM)</h1>
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cPanel is a <a href="http://www.hackthesec.co.in/search/label/Linux%20Tutorial">Linux-based</a> web hosting control panel that provides a graphical interface and automation tools designed to simplify the process of hosting a web site. cPanel utilizes a 3 tier structure that provides capabilities for administrators, resellers, and end-user website owners to control the various aspects of website and server administration through a standard web browser.</div>
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In addition to the GUI, cPanel also has command line and API-based access that allows third party software vendors, web hosting organizations, and developers to automate standard system administration processes.</div>
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cPanel is designed to function either as a dedicated server or virtual private server. The latest cPanel version supports installation on CentOS, Red Hat Enterprise Linux (RHEL), and CloudLinux OS. cPanel 11.30 is the last major version to support FreeBSD.</div>
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Application-based support includes Apache, PHP, MySQL, PostgreSQL, Perl, and BIND (DNS). Email based support includes POP3, IMAP, and SMTP services. cPanel is accessed via https on port 2083</div>
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cPanel script to enable SPF via commandline:</div>

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<center>
<script async="" src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>

<ins class="adsbygoogle" data-ad-client="ca-pub-5744890361111211" data-ad-slot="1658755283" style="display: inline-block; height: 15px; width: 728px;"></ins></center>
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Syntax</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># /usr/local/cpanel/bin/spf_installer $username</pre>
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Where, $username is the cPanel user name</div>
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cPanel script to enable DKIM via commandline: 
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Syntax</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># /usr/local/cpanel/bin/dkim_keys_install $username</pre>
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Replace $username with the actual cPanel username.</div>
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The above commands will help you to enable email authentications for single cPanel users. If you have hundreds of accounts and you want to enable SPF and DKIM for all accounts, please follow the simple for loop.</div>
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Here we can get the cPanel usernames from "/var/cpanel/users". Then give that to installations scripts. Please see the sample script below:</div>
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<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">for username in `ls -A /var/cpanel/users` ; do
 /usr/local/cpanel/bin/dkim_keys_install $username &&
 /usr/local/cpanel/bin/spf_installer $username ; done</pre>
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Thanks for support</div>
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<div style="color: #333333; font-family: verdana, geneva, sans-serif; font-size: 15px;">
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></div>
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Enabling email authentication (SPF and DKIM) for all existing accounts – cPanel/WHM

Enabling email authentication (SPF and DKIM) cPanel is a Linux-based web hosting control panel that provides a graphical interface and...

How to Install Go 1.7 on Ubuntu 16.04 / 14.04 / CentOS 7 / Fedora 24

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Install Go 1.7 on Ubuntu 16.04 / 14.04 / CentOS 7 / Fedora 24 
 
Go (often referred to as golang) is a free and open source programming language created at Google in 2007 by Robert Griesemer, Rob Pike, and Ken Thompson. It is a compiled, statically typed language in the tradition of Algol and C, with garbage collection, limited structural typing, memory safety features and CSP-style concurrent programming features added. 
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The language was announced in November 2009; it is used in some of Google's production systems,as well as by other firms. Two major implementations exist: Google's Go compiler, "gc", is developed as open source software and targets various platforms including Linux, OS X, Windows, various BSD and Unix versions, and since 2015 also mobile devices, including smartphones.A second compiler, gccgo, is a GCC frontend. The "gc" toolchain is self-hosting since version 1.7 
 
Download and Install Go Language: 
Switch to the root user. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">$ su -

### Ubuntu 16.04 / 14.04 ###

# apt-get update
# apt-get -y upgrade

### CentOS / RHEL / Fedora ###

# yum -y update
</pre>
Download the Go language binary package using the following command. Alternatively, you can visit <a href="https://golang.org/dl/">Go Language download</a> page to download the latest version of Go. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># wget https://storage.googleapis.com/golang/go1.7.1.linux-amd64.tar.gz</pre>
Extract the archive and move it to /usr/local. You can also place the Go lang binary to your custom location instead of /usr/local. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># tar -zxvf go1.7.1.linux-amd64.tar.gz -C /usr/local/</pre>
Setup Go Environment variables: 
 
 
Setup two important variables for Go, GOROOT (PATH) and GOPATH. Add /usr/local/go/bin to your path variable.run below command (temporary) or place the following command in /etc/profile or $HOME/.profile file for persistent across sessions. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">export PATH=$PATH:/usr/local/go/bin</pre>
For Go custom location replace /usr/local/go/bin/ with /path/to/bin/ directory. 
 
 
GOPATH is a Go environment variable for your project workspace. Create a workspace directory called "projectwork" in your home directory. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">mkdir $HOME/projectwork</pre>
Set GOPATH variable run below command (temporary) or place the following command in /etc/profile or $HOME/.profile file for persistent across sessions. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">export GOPATH=$HOME/projectwork</pre>
Verify Go Installation: 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># go version
go version go1.7.1 linux/amd64</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># go env

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/root/projectwork"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
CXX="g++"
CGO_ENABLED="1"</pre>
Create your first project: 
The workspace called "projectwork" located in $HOME directory. I am a root user, in my case "/root/projectwork" is my workspace. goto your workspace using below command 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># cd $GOPATH
or
# cd $HOME/work</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># mkdir -p src/hello</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># vi src/hello/hello.go</pre>
and place the following content in the hello.go file. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">package main

import "fmt"

func main() {
 fmt.Printf("Welcome To hackthesec\n")
}</pre>
Compile it with go command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># go install hello</pre>
go command will put an executable command (hello) inside the bin directory of your workspace. Execute the executable using the following command. 
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;"># $GOPATH/bin/hello</pre>
<pre style="background: rgb(68, 67, 65); border-radius: 6px; border: 1px solid rgb(227, 227, 227); box-sizing: border-box; clear: none !important; margin-bottom: 10px !important; margin-top: 10px !important; overflow: auto; padding: 10px !important; width: auto !important; word-break: break-all;">Welcome To hackthesec</pre>
Thanks for reading.. 
<a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a> 
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