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34 .\" @(#)printenv.1 8.1 (Berkeley) 6/6/93
35 .\" $FreeBSD: src/usr.bin/printenv/printenv.1,v 1.6.2.10 2002/06/26 08:25:30 tjr Exp $
42 .Nd print out the environment, set and print environment
49 .Op Ar name Ns = Ns Ar value ...
50 .Op Ar utility Oo Ar argument ... Oc
54 utility prints out the names and values of the variables in the environment,
55 with one name/value pair per line.
61 Some shells may provide a builtin
63 command which is similar or identical to this utility.
72 after modifying the environment as
73 specified on the command line.
75 .Ar name Ns = Ns Ar value
77 an environment variable,
82 The options are as follows:
83 .Bl -tag -width indent
87 with only those environment values specified.
88 The environment inherited
91 is ignored completely.
95 option, available for backward compatibility.
98 If no utility is specified,
100 prints out the names and values
101 of the variables in the environment, with one name/value pair per line.
105 utility is sometimes useful with the
109 The only difference between
110 .Dq Li #!/usr/local/bin/foo
112 .Dq Li "#!/usr/bin/env\ /usr/local/bin/foo"
113 is that the latter works even if
114 .Pa /usr/local/bin/foo
115 is itself interpreted.
118 this way also allows one to reference
121 as well as set up the environment as desired.
126 An exit status of 126 indicates
128 was found, but could not be executed.
129 An exit status of 127 indicates
150 utility doesn't handle utility arguments with equal (``='') signs in their
151 names, for obvious reasons.