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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.



printenv

printenv [variables] printenv option

Print values of all environment variables or, optionally, only the specified variables.

Options

--help

Print usage information and exit.

--version

Print version information and exit.