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.

While Linux systems install with thousands of commands, bash also supplies a large number of “built-ins”—commands that are not sitting in the file system as separate files, but are part of bash itself ...

For many users who get started with the command line in Linux, there’s a good chance they’re using Bourne Again Shell, or Bash. Bash is the default shell on Mac OS X, and Windows users can use Bash ...