05-10-2004
Tar and gunzip piping
I am using IRIX 6.5.11 and tcsh. I have created an arcihive by using the command "tar -cvf - /stuff/ /more/stuff|gzip --best>/stuff.tar.gz"
It made an archive of my files without taking up huge amounts of disk space with uncompressed files.
How do I extract files from the archive without uncompressing the gzipped archive?
I tried using "gunzip stuff.tar.gz|tar -xvf -" but the archive starts to uncompress and take up huge amounts of diskspace.
I would like to avoid the solution of "install gnu tar which supports compression." Which in my particular situation would be inconvenient.
Is is possible to extract files from the archive through STDIN and STDOUT like I did in creating the compressed archive?
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DLB(6) Games Manual DLB(6)
NAME
dlb - NetHack data librarian
SYNOPSIS
dlb { xct } [ vfIC ] arguments... [ files... ]
DESCRIPTION
Dlb is a file archiving tool in the spirit (and tradition) of tar for NetHack version 3.1 and higher. It is used to maintain the archive
files from which NetHack reads special level files and other read-only information. Note that like tar the command and option specifiers
are specified as a continuous string and are followed by any arguments required in the same order as the option specifiers.
This facility is optional and may be excluded during NetHack configuration.
COMMANDS
The x command causes dlb to extract the contents of the archive into the current directory.
The c command causes dlb to create a new archive from files in the current directory.
The t command lists the files in the archive.
OPTIONS AND ARGUMENTS
v verbose output
f archive specify the archive. Default if f not specified is LIBFILE (usually the nhdat file in the playground).
I lfile specify the file containing the list of files to put in to or extract from the archive if no files are listed on the command
line. Default for archive creation if no files are listed is LIBLISTFILE.
C dir change directory. Changes directory before trying to read any files (including the archive and the lfile).
EXAMPLES
Create the default archive from the default file list:
dlb c
List the contents of the archive 'foo':
dlb tf foo
AUTHOR
Kenneth Lorber
SEE ALSO
nethack(6), tar(1)
BUGS
Not a good tar emulation; - does not mean stdin or stdout. Should include an optional compression facility. Not all read-only files for
NetHack can be read out of an archive; examining the source is the only way to know which files can be.
4th Berkeley Distribution 28 Oct 1993 DLB(6)