1 .\" Copyright (c) 1980, 1990, 1993
2 .\" The Regents of the University of California. All rights reserved.
4 .\" This code is derived from software contributed to Berkeley by
5 .\" the Institute of Electrical and Electronics Engineers, Inc.
6 .\" Redistribution and use in source and binary forms, with or without
7 .\" modification, are permitted provided that the following conditions
9 .\" 1. Redistributions of source code must retain the above copyright
10 .\" notice, this list of conditions and the following disclaimer.
11 .\" 2. Redistributions in binary form must reproduce the above copyright
12 .\" notice, this list of conditions and the following disclaimer in the
13 .\" documentation and/or other materials provided with the distribution.
14 .\" 3. All advertising materials mentioning features or use of this software
15 .\" must display the following acknowledgement:
16 .\" This product includes software developed by the University of
17 .\" California, Berkeley and its contributors.
18 .\" 4. Neither the name of the University nor the names of its contributors
19 .\" may be used to endorse or promote products derived from this software
20 .\" without specific prior written permission.
22 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 $
36 .\" $DragonFly: src/usr.bin/printenv/printenv.1,v 1.2 2003/06/17 04:29:30 dillon Exp $
43 .Nd print out the environment, set and print environment
50 .Op Ar name Ns = Ns Ar value ...
51 .Op Ar utility Oo Ar argument ... Oc
55 utility prints out the names and values of the variables in the environment,
56 with one name/value pair per line.
62 Some shells may provide a builtin
64 command which is similar or identical to this utility.
73 after modifying the environment as
74 specified on the command line.
76 .Ar name Ns = Ns Ar value
78 an environment variable,
83 The options are as follows:
84 .Bl -tag -width indent
88 with only those environment values specified.
89 The environment inherited
92 is ignored completely.
96 option, available for backward compatibility.
99 If no utility is specified,
101 prints out the names and values
102 of the variables in the environment, with one name/value pair per line.
106 utility is sometimes useful with the
110 The only difference between
111 .Dq Li #!/usr/local/bin/foo
113 .Dq Li "#!/usr/bin/env\ /usr/local/bin/foo"
114 is that the latter works even if
115 .Pa /usr/local/bin/foo
116 is itself interpreted.
119 this way also allows one to reference
122 as well as set up the environment as desired.
127 An exit status of 126 indicates
129 was found, but could not be executed.
130 An exit status of 127 indicates
151 utility doesn't handle utility arguments with equal (``='') signs in their
152 names, for obvious reasons.