env —
set and print environment
env |
[-i] [name=value ...]
[utility [argument ...]] |
env executes utility after
modifying the environment as specified on the command line. The option
name=value specifies an environmental variable,
name, with a value of value. The
option ‘-i’ causes
env to completely ignore the environment it inherits.
If no utility is specified,
env prints out the names and values of the variables
in the environment, with one name=value pair per
line.
env exits with one of the following values:
- 0
- utility was invoked and completed successfully. In
this case the exit code is returned by the utility itself, not
env. If no utility was specified, then
env completed successfully and returned the exit
code itself.
- 1
- An invalid command line option was passed to
env.
- 1-125
- utility was invoked, but failed in some way; see its
manual page for more information. In this case the exit code is returned
by the utility itself, not
env.
- 126
- utility was found, but could not be invoked.
- 127
- utility could not be found.
The historic - option has been deprecated but is still
supported in this implementation.
The env utility conforms to IEEE Std
1003.2-1992 (“POSIX.2”).
env doesn't handle commands with equal
(“=”) signs in their names, for obvious reasons.