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ENV(1) NetBSD General Commands Manual ENV(1)
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env -- set and print environment
env [-0i] [-u name] [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.
The option `-u name' causes removal of the name environment variable if
it is in the environment. This is similar to the unset command in sh(1).
The value for name must not include the `=' character.
If no utility is specified, env prints out the names and values of the
variables in the environment. Each name=value pair is separated by a new
line unless -0 is specified, in which case name/value pairs are separated
by NUL. Both -0 and utility must not be specified together.
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.
125 utility was specified together with the -0 option.
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
The -u and -0 options are non-standard extensions.
The env utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').
The env command appeared in 4.4BSD.
The -u and -0 options first appeared in NetBSD 10.
env doesn't handle commands with equal (``='') signs in their names, for
NetBSD 9.99 February 8, 2020 NetBSD 9.99