Files, permissions, processes, networking, packages and disks: the Linux commands you actually use, with syntax and examples, and the ip and ss tools that replaced ifconfig and netstat.

Linux's oldest commands still work, but these three modern alternatives make finding files, searching, and navigating much easier.

It's easy, and they might change you.

Linux commands often have long lists of options they support, many of which are single-letter mnemonics. These can be tricky ...