Check if a file is really a file, whether a string contains anything, and whether you can run a program with these vital patterns.

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 ...

Your terminal doesn't have to look like a boring block of white-on-black text. Personalizing it so much easier than it seems.

Enable the Linux terminal on any Android device, and you can create or practice your bash scripting on the go.