Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...

Of all the Linux commands, rm is notorious. It's easy to completely wipe out your system with one mislaid rm command as root.

Much to the chagrin of those who would like to malign the Linux operating system, it's actually quite easy to use. Thanks to modern GUI desktop environments and applications, anyone can jump into the ...

Commands that provide help are essential. Here's a look at some of the help you can get from the Linux system itself. Even after you’ve used Linux for a while, you will still find yourself needing ...

Linux might sound scary for first-time Linux users, but actually, it isn’t. Linux is a bunch of open-source Unix operating systems based on Linux Kernel. These operating systems are called Linux ...

Working on the command line is an integral part of being a successful Linux user. You need to have a firm grasp of certain commands to work effectively. There are even certain commands that you must ...

Linux is a multi-user operating system. What does that mean? Like all good operating systems, you can have multiple user accounts on one machine. You can also have more than one user logged in at once ...

Linux is constantly evolving, and with it the tools that its fans use on a daily basis. However, some of the classics such as iptables , which has been replaced by nftables , are now not only outdated ...

I’m a big fan of the anime series Neon Genesis Evangelion. One of the quotes from it that stands out in my head is, “Man fears the darkness, and so he scrapes away at the edges of it with fire.” For ...

If you’re considering adding Linux to your data center, or your company is looking at promoting you to become their first (or next) Linux admin, you probably understand there are lots of commands to ...