1 .\" Copyright (c) 2003 Matthew Dillon <dillon@backplane.com>
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 .\" $DragonFly: src/bin/varsym/varsym.1,v 1.10 2008/02/22 05:19:25 swildner Exp $
27 .Dd September 27, 2009
32 .Nd get and set user and system-wide variables for variant symlinks
37 .Ar var Ns Op Ns Cm = Ns Ar data
43 .Ar var Ns Op Ns Cm = Ns Ar data
51 program manages user and system-wide variables.
52 These variables are typically
53 used by the system to resolve variant symlinks but may also be used generally.
55 For each operand set, modify, retrieve, or delete the specified variable.
56 By default variables specified without data are retrieved and variables
57 specified with data are set.
58 Variables may be set to empty.
61 List all variables at the specified level.
62 Note that per-process variables
63 override per-user variables and per-user variables override system-wide
65 By default, per-user variables are listed.
68 The specified variables are deleted.
69 Any specified data is ignored.
71 This option causes variables to be set on a per-process basis and restricts
72 retrievals to process-specific variables.
75 is run as its own process, using this option to set a variable will not
76 affect your shell's namespace.
77 Instead you might want to use the
79 option to set local varsyms and exec a command.
82 When retrieving a variable only its data is printed.
84 This option causes variables to be set system-wide and restricts retrievals
85 to system-specific variables.
87 This option causes variables to be set on a per-user-id basis and restricts
88 retrievals to user-specific variables.
89 This is the default unless
93 This option causes variables to be set only within the
95 process and its children, and also allows you to specify a command and
96 arguments to exec after the var=data specifications.
101 utility exits with one of the following values:
106 A requested variable could not be found
108 A requested variable could not be set