Whether you are a Linux system administrator or a DevOps engineer, you spend a lot of time tracking performance metrics on your servers. You may sometimes have instances that are…

If you are working on a small to medium entreprise network, you probably have dozens of drives and printers that need to be shared. Besides the NFS protocol, there are…

As a system administrator, you are probably monitoring the disk space on your system all the time. When browsing directories on your server, you might have come across directories with…

In Git, branches are commonly used in order to develop features independently from the main workflow. Git is a decentralized versioning system : as a consequence, you have local and…

When working with Bash and shell scripting, you might need to use conditions in your script. In programming, conditions are crucial : they are used to assert whether some conditions…

As a system administrator, you probably know how important environment variables are in Bash. Environment variables are used to define variables that will have an impact on how programs will…

Chown is a command on Linux that is used in order to change the owner of a set of files or directories. Chown comes with multiple options and it is…

Pinging ports is one of the most effective troubleshooting technique in order to see if a service is alive or not. Used by system administrators on a daily basis, the…

As a network administrator, you probably know how costly routers can be. If you are configuring a complex network architecture, you might need Cisco or Netgear routers, as they embed…