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Full Discussion: Tar gzip compression rate
Top Forums UNIX for Advanced & Expert Users Tar gzip compression rate Post 303038987 by cokedude on Thursday 19th of September 2019 02:31:45 AM
Old 09-19-2019
Tar gzip compression rate

How good is the compression rate of gzip when you use tar with the gzip option? I am pretty amazed that a 1 GB file was reduced to 1019K. This is what I did.

Code:
tar -cvf tar_test.tar.gz -T /list_of_files
ls -hl
-rw-r-----. 1 owner group    19 Jul 23 16:00 list_of_files
-rw-r-----. 1 owner group 1019K Sep 19 02:17 tar_test.tar.gz

This User Gave Thanks to cokedude For This Post:
 

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SHTOOL-TARBALL.TMP(1)					      GNU Portable Shell Tool					     SHTOOL-TARBALL.TMP(1)

NAME
shtool-tarball - GNU shtool command for rolling standardized tarballs SYNOPSIS
shtool tarball [-t|--trace] [-v|--verbose] [-o|--output tarball] [-c|--compress prog] [-d|--directory directory] [-u|--user user] [-g|--group group] [-e|--exclude pattern] path [path ...] DESCRIPTION
This command is for rolling input files under path into a distribution tarballs which can be extracted by tar(1). The four important aspects of good open source software tarballs are: (1) unpack into a single top-level directory, (2) top-level directory corresponds to the tarball filename, (3) tarball files should be sorted and (4) arbitrary names for file owner and group. OPTIONS
The following command line options are available. -v, --verbose Display some processing information. -t, --trace Enable the output of the essential shell commands which are executed. -o, --output tarball Output tarball to file tarball. -c, --compress prog Pipe resulting tarball through compression program prog. -d, --directory directory Sets the top-level directory into which the tarball unpacks. By default it is tarball without the trailing ".tar.*" extension. -u, --user user The user (owner) of files and directories in the tarball to user. -g, --group group The group of files and directories in the tarball to group. -e, --exclude pattern Exclude files and directories matching comma-separated list of regex pattern from the tarball. Directories are expanded before the filtering takes place. The default filter pattern is ""CVS,\.cvsignore,\.svn,\.[oa]$"". EXAMPLE
# Makefile.in dist: ... V=`shtool version -d short ...`; shtool tarball -o foobar-$$V.tar.gz -c 'gzip -9' -u bar -g gnu -e 'CVS,.cvsignore' . HISTORY
The GNU shtool tarball command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 1999 for GNU shtool. SEE ALSO
shtool(1), tar(1), compress(1). 18-Jul-2008 shtool 2.0.8 SHTOOL-TARBALL.TMP(1)
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