Cryptography is an important part of IT security, and OpenSSL is a well-known cryptography toolkit for Linux. Experts depend on OpenSSL because it is free, it has huge capabilities, and it’s easy to use in Bash scripts.

Once you’ve mastered the everyday commands for manipulating files, you might want to do more. We show you some powerful commands for advanced file management.

Linux offers a variety of tools for shutting down systems and processes. We describe some important commands.

We show you how to add devices to and remove them from your system while keeping it stable and secure.

The global village is big enough to want to find out where your friend and enemies have set up camp. Charly offers a quick IP-based introduction to geography.

Even with encrypted drives, account passwords remain one of the prime security methods for any Linux system. With a little knowledge of the available commands and their options, you can make your account passwords more secure.

Wodim works behind the scenes in popular CD/ DVD-burning software, but it’s even more powerful at the command line.

The Fabric Python library makes it extremely easy to create repeatable scripts of commands over SSH to any number of servers.