Man pages provide essential information on Linux commands and many users refer to them often, but there’s a lot more to the man pages than many of us realize.
You can always type a command like “man who” and get a nice description of how the man command works, but exploring commands that you might not know could be even more illuminating. For example, you can use the man command to help identify commands to handle some unusually challenging task or to show options that can help you use a command you already know in new and better ways.
[Source: Network World]