1unshar(1) User Commands unshar(1)
2
6 unshar - unpack a shar archive
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9 unshar [-flag [value]]... [--opt-name[[=| ]value]]... [ file ... ]
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12 Unshar scans the input files (typically email messages) looking for the
13 start of a shell archive. If no files are given, then standard input
14 is processed instead. It then passes each archive discovered through
15 an invocation of the shell program to unpack it.
16
18 -d dir, --directory=dir
19 change directory to dir first.
20 Before unpacking any files, change the current directory to dir.
22 -c, --overwrite
24 Overwrite any pre-existing files.
25 This option is passed through as an option to the shar file.
27 Many shell archive scripts accept a -c argument to indicate that
28 existing files should be overwritten.
29 -f, --force
31 This is an alias for the --overwrite option.
32 -E split-pat, --split-at=split-pat
34 separate archives on split-pat lines.
35 With this option, unshar isolates each different shell archive
37 from the others which have been placed in the same file, unpack‐
38 ing each in turn, from the beginning of the file to the end.
39 Its proper operation relies on the fact that many shar files are
40 terminated by a readily identifiable string.
41 For example, noticing that most `.signatures' have a double
43 hyphen ("--") on a line right before them, one can then some‐
44 times use --split-at=--. The signature will then be skipped,
45 along with the headers of the following message.
46 -e, --exit-0
48 split archives at "exit 0" lines. This option must not appear
49 in combination with any of the following options: split-at.
50 Most shell archives end with a line consisting of simply "exit
52 0". This option is equivalent to (and conflicts with) --split-
53 at="exit 0".
54 -h, --help
56 Display usage information and exit.
57 -!, --more-help
59 Pass the extended usage information through a pager.
60 -R [rcfile], --save-opts[=rcfile]
62 Save the option state to rcfile. The default is the last con‐
63 figuration file listed in the OPTION PRESETS section, below.
64 -r rcfile, --load-opts=rcfile, --no-load-opts
66 Load options from rcfile. The no-load-opts form will disable
67 the loading of earlier RC/INI files. --no-load-opts is handled
68 early, out of order.
69 -v [{v|c|n}], --version[={v|c|n}]
71 Output version of program and exit. The default mode is `v', a
72 simple version. The `c' mode will print copyright information
73 and `n' will print the full copyright notice.
74
76 Any option that is not marked as not presettable may be preset by load‐
77 ing values from configuration ("RC" or ".INI") file(s). The file
78 "$HOME/.sharrc" will be used, if present.
79
81 See OPTION PRESETS for configuration files.
82
84 One of the following exit values will be returned:
85 0 (EXIT_SUCCESS)
87 Successful program execution.
88 1 (EXIT_FAILURE)
90 The operation failed or the command syntax was not valid.
91 66 (EX_NOINPUT)
93 A specified configuration file could not be loaded.
94 70 (EX_SOFTWARE)
96 libopts had an internal operational error. Please report it to
97 autogen-users@lists.sourceforge.net. Thank you.
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100 shar(1)
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103 The shar and unshar programs is the collective work of many authors.
104 Many people contributed by reporting problems, suggesting various
105 improvements or submitting actual code. A list of these people is in
106 the THANKS file in the sharutils distribution.
107
109 Copyright (C) 1994-2013 Free Software Foundation, Inc. all rights
110 reserved. This program is released under the terms of the GNU General
111 Public License, version 3 or later.
112
114 Please put sharutils in the subject line for emailed bug reports. It
115 helps to spot the message.
116 Please send bug reports to: bug-gnu-utils@gnu.org
118
120 This manual page was AutoGen-erated from the unshar option definitions.
121GNU sharutils (4.13.3) 06 Jan 2013 unshar(1)