Contact
Impressum
Why this name?
pdf

nomarch

NAME

nomarch − extract ‘.arc’ archives

SYNOPSIS

nomarch [-hlptUv] [archive.arc] [match1 [match2 ... ]]

DESCRIPTION

nomarch lists, extracts, or tests ‘.arc’ archives. (An alternate extension sometimes used was ‘.ark’; these work too.) This is a very outdated file format which should certainly not be used for anything new, but you may still need an extraction utility, and here it is. :-)

The default action is to extract all files in the specified archive; see OPTIONS below for how to do other things instead.

OPTIONS

-h

give terse usage help.

-l

list files in archive. If verbose listings are enabled, it shows the filename, compression method, compressed/uncompressed size, date/time, and CRC; but by default, it just shows the filename, uncompressed size, and date/time.

-p

extract to standard output, rather than to separate files.

-t

test files in archive (more precisely, check file CRCs).

-U

use uppercase filenames; more precisely, preserve original case from archive.

-v

give verbose output (when used with ‘-l’).

archive.arc

the archive to operate on.

match1 etc.

optionally specify which archive members to list/extract/test. Those which match any of these filenames/wildcards are processed. Wildcard operators supported are shell-like ‘*’ and ‘?’, but don’t forget to quote arguments which use these (e.g. ‘nomarch foo.arc ’*.bar’’).

EXTRACTING MULTIPLE ARCHIVES

nomarch follows the ‘unzip’-like practice of working on only one archive per run, with further ‘filenames’ given on the command-line actually specifying files to extract (or whatever). The easiest way to work on multiple files with nomarch is simply to run it multiple times using for; for example:

for i in *.arc; do nomarch $i; done

The above would extract all archives in the current directory.

USING THE PROGRAM FROM EMACS

Emacs’s arc-mode facility lets you work with various kinds of archive file directly from the editor. Making it use nomarch for extracting ‘.arc’ files isn’t too hard. Just add the following to your ~/.emacs file:

(setq archive-arc-extract ’("nomarch" "-U"))

BUGS

The CRC used by the format is only 16-bit, so ‘-t’ is a less-than-perfect test.

One compression method, obsolete even by ‘.arc’ standards :-), isn’t supported yet. This is partly because I’ve yet to find a single file which uses it, despite testing an awful lot of files.

Subdirectories in Spark archives are extracted as the ‘.arc’-format files they really are, which may not be terribly convenient.

SEE ALSO

tar(1), gzip(1), bzip2(1), lbrate(1)

AUTHOR

Russell Marks (rus AT svgalib DOT org).

pdf
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

No Banana Union - No Software Patents