If you may get an error in Apache2 AH01630 client denied by server configuration, you need to check in your Apache error log file.

Route command is very helpful for every Linux Administrator, Its manipulate the kernel's IP routing tables. We can use to set up static routes to specific network or hosts via an interface and it has been configured with the ifconfig.

Changing IP address of an interface without rebooting or restart all network interface in Linux.

rc.d is very important directory, its contain Scripts or directories of scripts to run at startup. These scripts are automatically run at boot time. These files are,

We can upgrade or downgrade the packages using yum or rpm command in Linux and unix system. There are two way roll back an rpm,

If you may get an error while starting the tomcat server after configured SSL certification of your domain,

This post describes about how to list out Apache modules and security modules on Linux operating system.