Linux System Administration

If you have been working with Linux systems for quite some time, you already know how important it is to keep your filesystem structured. In some cases, you may need…

When working with Bash and shell scripting, you might need to check whether a directory or a file exists or not on your filesystem. Based on this condition, you can…

In our previous tutorial on Bash, we have seen how you can effectively create, run and write simple conditional statements in Bash. You have discovered many concepts of Bash such…

This tutorial discusses how you can easily write your own Bash scripts on Linux. As a system administrator, it is quite likely that you are performing repetitive tasks that could…

As a Linux system administrator, inspecting log files is one of the most common tasks that you may have to perform. Linux logs are crucial : they store important information…

As a Linux system administrator, you are responsible for many machines that may be located locally or on distant sites. In some cases, you will need to connect to them…

This tutorial focuses on finding text in files using the grep command and regular expressions. When working on a Linux system, finding text in files is a very common task…

As a system administrator, knowing how to install, update or delete Linux packages is crucial in order to maintain your Linux hosts and servers. You may have to update your…

The RAM, for Random Access Memory, is a critical component of a Linux system that needs to be monitored closely. In some cases, you might run out of memory, leaving…

As a system administrator, you may have downloaded some archives that you need to extract in order to reveal their files. You may be also backing up an entire database…