Getting Help on the Command Line

The most common ways to get help in Linux is with:

• man: Extensive help and information about a command or directory.
• info: A more modern approach to the man command, more detailed information formatted in hypertext similar to a web page.
• locate: Searches within a database and then outputs every name that matches the given string. Supports regular expressions and wildcards.
• /usr/share/doc/: Documentation for a given software. Licenses, library documentation, etc.
• -h or --help: Quick help with familiar commands or their arguments.