ENV

Section: User Commands (1)
Updated: July 2018
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NAME

env - run a program in a modified environment

SYNOPSIS

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

DESCRIPTION

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
-S, --split-string=,S/: process and split S into separate arguments; used to pass multiple arguments on shebang lines
-v, --debug: print verbose information for each processing step
--help: display this help and exit
--version: output version information and exit

A mere - implies -i. If no COMMAND, print the resulting environment.

OPTIONS

-S/--split-string usage in scripts

The -S option allows specifing multiple parameters in a script. Running a script named 1.pl containing the following first line:

#!/usr/bin/env -S perl -w -T

Will execute perl -w -T 1.pl.

Without the '-S' parameter the script will likely fail with:

/usr/bin/env: 'perl -w -T': No such file or directory

See the full documentation for more details.

AUTHOR

Written by Richard Mlynarik, David MacKenzie, and Assaf Gordon.

REPORTING BUGS

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

COPYRIGHT

Copyright © 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Index

-S/--split-string usage in scripts

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Time: 11:23:04 GMT, May 10, 2024