The man pages on a Linux system can do more than provide information on particular commands. They can help discover commands you didn't realize were available. Man pages provide essential information ...

The which command is the simplest of the three. When you use it to ask about a Linux command, it will run down your search path looking for executable files by the name you specify. These can be ...

The here string is the leaner, more versatile cousin of the here doc.

Linux commands often have long lists of options they support, many of which are single-letter mnemonics. These can be tricky to learn and remember, but their redeeming feature is their reusability: ...