Category: Linux System Administration

  • Screen Command on Linux Explained

    Screen Command on Linux Explained

    The screen command is a very common command used on Linux to launch and arrange multiple terminal shells within one single shell. Screen is most of the time used for two purposes. It can either be used in order to organize multiple shells and navigate between them easily. It can also be used in order […]

  • Find Files and Directories on Linux Easily

    Find Files and Directories on Linux Easily

    This tutorial focuses on how to find files on Linux using the find and the locate command. As a system administrator, it is a very common task to look for a specific file on your file system. However, it might be sometimes hard to find files on a Linux filesystem especially if you have dozens […]

  • Writing Scripts on Linux using Bash

    Writing Scripts on Linux using Bash

    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 be automated. Luckily for you, there is a programming language that can be used on Linux in order to write scripts : the Bash programming […]

  • Working Remotely with Linux Systems

    Working Remotely with Linux Systems

    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 in order to fix an issue with disk space for example. If you are working with users, some of them may get stuck in an […]

  • Find Text in Files on Linux using grep

    Find Text in Files on Linux using grep

    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 done by system administrators every day. You may want to search for specific lines in a log file in order to troubleshoot servers issues. In […]

  • APT Package Manager on Linux Explained

    APT Package Manager on Linux Explained

    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 current packages in order to get the latest security patches for your servers. On the other hand, you may have to setup an entire HTTP […]

  • How To Check RAM on Linux

    How To Check RAM on Linux

    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 your server with very slow response times or being completely unresponsive. As a consequence, knowing how to check your RAM on Linux is crucial because […]

  • How To Archive and Compress Files on Linux

    How To Archive and Compress Files on Linux

    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 made of a wide variety of small files that you want to aggregate in one single archive. Archiving and compressing files are common operations in […]

  • How To Add Swap Space on Debian 10 Buster

    How To Add Swap Space on Debian 10 Buster

    This tutorial focuses on how to create swap space on Debian 10 via a swap file or a swap partition on your hard drive. On a Linux system, it is very common to run out of memory, because you run too many programs, or because you run programs that are consuming too much memory. As […]

  • Source Command on Linux Explained

    Source Command on Linux Explained

    The source command on Linux is a pretty popular function run by system administrators daily. But what is the function of the source command? Used to refresh the current shell environment, the source command can also be used in order to import functions into other bash scripts or to run scripts into the current shell […]