How To Add Swap Space on CentOS 7
Swap is a space on a disk that is used when the amount of physical RAM memory is full. When a Linux system runs out of RAM, inactive pages are…
command to activate VG on LVM?
When you create a volume group, by default, it is activated. Sometimes you may need to activate it manually to make the kernel aware of volume groups. To activate, #…
cPanel EasyApache 4 Installing Redis and Redis PHP extension
cPanel EasyApache 4 Installing Redis and Redis PHP extension Installing the Redis daemon: for CentOS 6/RHEL 6 for CentOS 7/RHEL 7 Installing the Redis PHP extension for all available versions…
Resetting email account password from Command line in cPanel
Resetting email account password from Command line in cPanel 1) Login to the server as root via SSH 2) Run the command “openssl” and you will see this: test@test #…
Postfix Spam Tracking
Get the mailids of all email currently in queue: postqueue -p|egrep “{11}”|awk ‘{print $1}’ Get the count of emails in queue: mailq | tail -n 1 or postqueue -p|egrep “{11}”|awk…
Limit download rate for yum
yum (RHEL/CentOs/SL/etc) has an option which allows you to limit the download rate/amount of bandwidth used to download packages. Here’s how you do it: Edit the /etc/yum.conf file and add…
Centos/RHEL not booting. Only shows GRUB _
When you see the following prompt with a blinking cursor instead of your RHEL 5 (Or CentOS/Scientific Linux v5 obviously) server booting, you will have in all likelihood have to…
Execute command via SSH on remote box and output on local machine.
How to execute command via SSH on remote machine and get output on local machine console. ## SYNTAX ssh @ ## EXAMPLE ssh test@10.10.101.1 df -h test@ 10.10.101.1 's password:…
How to install VMWare Tools on CentOS/RHEL 6.5
To install VMWare tools using YUM on CentOS/RHEL 6.5, do the following. Note, I’m logged in as the ‘root’ user, but you could execute these commands using ‘sudo’ as well.…