The ps command in Linux, as you might already know, is one of the most frequently used command-line tools. For…

Mostly, we have only a single display connected to computer systems. However, you can have multiple displays connected to a…

When you get the error message "system-config-firewall: command not found" on your CentOS Server while trying to configure the firewall…

The current status of a Linux software raid is written to the virtual file /proc/mdstat. You can view the status…

If a process is shown with process state "D" in tools like ps or top, then it's an uninterruptable process.…

This short tutorial describes the steps to optimize the performance of a MySQL database with the mysqltuner script. This tool…

Sometimes you might want to block connects to your server by IP address. E.g. when someone tries to attack your…

When working on the command line in Linux, you may want to know how much time a particular command has…

This short guide shows you how to get a list of all installed Packages on Debian Linux. Packages on Debian…

Sometimes it is necessary to limit the download rate of the wget command, e.g. when you are downloading a large…