Category: Linux System Administration

  • How To Zip Multiple Files on Linux

    How To Zip Multiple Files on Linux

    ZIP is by far one of the most popular archive file format among system administrators. Used in order to save space on Linux filesystems, it can be used in order to zip multiple files on Linux easily. In this tutorial, we are going to see how can easily zip multiple files on Linux using the […]

  • How To List Disks on Linux

    How To List Disks on Linux

    For the system administrator, checking that disks are working properly is a big concern. In many cases, you will have to list all the disks available on your computer, with their sizes, in order to make sure that they don’t run out of space. If they were to run out of space, you could essentially […]

  • How To Add Route on Linux

    How To Add Route on Linux

    As a network engineer, you probably spend a lot of time thinking and planning your network infrastructure. You plan how computers will be linked, physically using specific cables but also logically using routing tables. When your network plan is built, you will have to implement every single link that you theorized on paper. In some […]

  • How To Encrypt Partition on Linux

    How To Encrypt Partition on Linux

    In one of our previous articles, we learnt how you can encrypt your entire root filesystem on Linux easily. However, in some cases, you may want to encrypt one simple partition that may store some of your important files. As you already know, encrypting your disks is crucial. If your laptop were to be stolen, […]

  • How To Flush DNS Cache on Linux

    How To Flush DNS Cache on Linux

    DNS, short for the Domain Name System protocol, is used on Linux systems in order to retrieve IP addresses associated with names. For example, when you are performing a ping request, it is quite likely that you are using the DNS protocol to retrieve the server IP. In most cases, the DNS requests that you […]

  • How To Find Last Login on Linux

    How To Find Last Login on Linux

    If you are working in a medium to big-sized company, it is quite likely that you are working with many other system administrators. As you are performing your sysadmin tasks, some users may try to connect to your server in order to perform their daily tasks. However, in some cases, you may find that something […]

  • How To Encrypt Root Filesystem on Linux

    How To Encrypt Root Filesystem on Linux

    As a system administrator, you probably already know how important it is to encrypt your disks. If your laptop were to be stolen, even a novice hacker would be able to extract the information contained on the disks. All it takes is a simple USB stick with a LiveCD on it and everything would be […]

  • How To Encrypt File on Linux

    How To Encrypt File on Linux

    If you are a conscientious system administrator, you have probably already wondered how you can make your files secure. Nowadays, as system attacks get more and more frequent, it isn’t probably a bad idea to think about encrypting your files. On Linux, there are multiple of encrypting files, directories or filesystems : namely using the […]

  • How To List Services on Linux

    How To List Services on Linux

    As a system administrator, you are probably dealing with a lot of services every day. On Linux, services are used for many different purposes. They may be used in order to start a SSH server on your machine or they can perform some operations on a specific hour or day. Whether you are using a […]

  • How To Manage Root Account on Ubuntu 20.04

    How To Manage Root Account on Ubuntu 20.04

    On Linux, the root account is probably one of the most powerful accounts that there is. Considered the most privileged account on a Unix system, root can perform any tasks needed for system administration. Navigating a specific folder, killing any process or deleting a directory, root is so powerful that it has to be managed […]