env man page

env — run a program in a modified environment



env program

env -i program

env -u variable program

env variable=value program


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.

Reporting Bugs

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report env translation bugs to <https://translationproject.org/team/>

See Also

Full documentation at: <https://www.gnu.org/software/coreutils/env>
or available locally via: info '(coreutils) env invocation'

Referenced By

environ(7), guestfs-release-notes(1), ksh(1), mosh(1), pkgconf(1), pkg-config(1), pmpython(1), procenv(1), tgif.1x(1).

December 2017 GNU coreutils 8.29 User Commands