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
−−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.
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.
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report env translation bugs to <https://translationproject.org/team/>
Full documentation at: <https://www.gnu.org/software/coreutils/env>
or available locally via: info '(coreutils) env invocation'
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. |