Man pages sections > man1 > env

env - run a program in a modified environment

ENV(1) User Commands ENV(1)


env - run a program in a modified environment


env [ OPTION]... [-] [NAME=VALUE]... [COMMAND [ ARG]...]


Set each NAME to VALUE in the environment and run COMMAND.
Mandatory arguments to long options are mandatory for short options too.
-i, --ignore-environment
start with an empty environment
-0, --null
end each output line with NUL, not newline
-u, --unset=NAME
remove variable from the environment
-C, --chdir=DIR
change working directory to DIR
display this help and exit
output version information and exit
A mere - implies -i. If no COMMAND, print the resulting environment.


Written by Richard Mlynarik and David MacKenzie.


GNU coreutils online help: <>
Report env translation bugs to <> Copyright © 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


Full documentation at: <>
or available locally via: info '(coreutils) env invocation'
October 2017 GNU coreutils 8.28