env man page on OpenDarwin

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ENV(1)			  BSD General Commands Manual			ENV(1)

     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.

     If the utility is invoked, the exit status of env shall be the exit sta‐
     tus of utility; otherwise, the env utility exits with one of the follow‐
     ing values:

     0	     The env utility completed successfully

     1-125   An error occurred in the env utility.

     126     The utility specified by utility was found, but could not be

     127     The utility specified by utility could not be found.

     The historic - option has been deprecated but is still supported in this

     execvp(3), environ(7)

     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.

BSD				August 27, 1993				   BSD

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