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30 .\" @(#)printenv.1 8.1 (Berkeley) 6/6/93
31 .\" $FreeBSD: src/usr.bin/printenv/printenv.1,v 1.6.2.10 2002/06/26 08:25:30 tjr Exp $
32 .\" $DragonFly: src/usr.bin/printenv/printenv.1,v 1.3 2005/08/05 22:35:11 swildner Exp $
40 .Nd print out the environment, set and print environment
47 .Op Ar name Ns = Ns Ar value ...
48 .Op Ar utility Oo Ar argument ... Oc
52 utility prints out the names and values of the variables in the environment,
53 with one name/value pair per line.
59 Some shells may provide a builtin
61 command which is similar or identical to this utility.
70 after modifying the environment as
71 specified on the command line.
73 .Ar name Ns = Ns Ar value
75 an environment variable,
80 The options are as follows:
81 .Bl -tag -width indent
85 with only those environment values specified.
86 The environment inherited
89 is ignored completely.
93 option, available for backward compatibility.
96 If no utility is specified,
98 prints out the names and values
99 of the variables in the environment, with one name/value pair per line.
103 utility is sometimes useful with the
107 The only difference between
108 .Dq Li #!/usr/local/bin/foo
110 .Dq Li "#!/usr/bin/env\ /usr/local/bin/foo"
111 is that the latter works even if
112 .Pa /usr/local/bin/foo
113 is itself interpreted.
116 this way also allows one to reference
119 as well as set up the environment as desired.
124 An exit status of 126 indicates
126 was found, but could not be executed.
127 An exit status of 127 indicates
148 utility doesn't handle utility arguments with equal (``='') signs in their
149 names, for obvious reasons.