$ whatis env

env env (1) - run a program in a modified environment

env env (1) - set environment for command invocation

Examples:

1. env
2. printe PATH
3. printenv $TZ

Please click on " man env " to see the Manual Page for this command.

In addition, I recommand you should read the manual pages for related commands below:

man printenv to see the Manual Page for this command.

man setenv to see the Manual Page for this command.

Please click on " setenv in PDF " format.