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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

Buy it now, or read it online on Safari Bookshelf.


nice [option] [command [arguments] ]

Execute a command (with its arguments) with lower priority (i.e., be "nice" to other users). With no command, nice prints the current scheduling priority (niceness). If nice is a child process, it prints the parent process's scheduling priority. Niceness has a range of -20 (highest priority) to 19 (lowest priority).



Print a help message and then exit.

-n adjustment, -adjustment, --adjustment=adjustment

Run command with niceness incremented by adjustment (1-19); default is 10. A privileged user can raise priority by specifying a negative adjustment (e.g., -5).


Print version information and then exit.

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