Linux Command Directory
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.
printenv [variables] printenv option
Print values of all environment variables or, optionally, only the specified variables.
Print usage information and exit.
Print version information and exit.