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How to Change & Set the Default crontab Editor

 Most hardcore command line users and unix geeks love vi, but I prefer nano. If you want to change your default crontab editor to nano, here’s...

Linux / Unix: Sed Substitute Multiple Patterns [ Find & Replace...

I'm using the date +'%D_%T' to store Unix system date and time in a shell variable called $_now: _now="$(date +'%D_%T')" echo $_nowOutputs: 01/20/12_16:10:42 I'd like to replace / and : with _....

Check Spam on EXIM Mail Server

We can simply find out the details spammers from mail queue itself. Some simple exim commands for check spams are below. First login tho the...

Install eAccelerator on cPanel Server – Command line

What is eAccelerator ? Yes, before going directly to the installation steps, you must have an idea about eAccelerator. As the name indicates, it’s an...

Hardening your TCP/IP Stack Against SYN Floods

Denial of service (DoS) attacks launch via SYN floods can be very problematic for servers that are not properly configured to handle them....

How To Install APF Firewall on Cpanel

Advanced Policy Firewall, or APF, is basically an interface to iptables, which is the standard interface to managing network ports on Linux machines. Interacting with...

How to Find and Kill All Zombie Processes

On Unix operating systems, a zombie process or defunct process is a process that has completed execution but still has an entry in the...

cPanel AWStats is Not Updating Automatically

AWStats is one of the most commonly using cPanel tool to analyse website traffic summary. You can analyse a lot of things from here...

How to install System Integrity Monitor (SIM) Cpanel

Description: SIM is a system and services monitor for ‘SysVinit’ systems. It is designed to be intuitive and modular in nature, and to provide a...

CVE-2014-6271 – Critical BASH vulnerability discovered (Shellshock)

Critical BASH vulnerability discovered – update BASH on your CentOS Linux server!!! ## Shellshock vulnerability ## Summary >> A critical code execution vulnerability (Remote) affecting bash (Unix...