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Top Forums Shell Programming and Scripting tar --exclude with curly braces Post 302683899 by majest on Wednesday 8th of August 2012 10:03:39 PM
Old 08-08-2012
Quote:
Originally Posted by alister
Sure, just use mutliple --exclude options.



It doesn't make much sense to resort to a dynamic, command-building process when the "variable" is constant data hardcoded into the script. Why not just add one --exclude pattern per pattern? Your script will be simpler, more readable, more efficient, and safer.

Still, if you're determined to store exclusion patterns in a variable, the following is much less complicated:
Code:
include='C D'
exclude='C
*.tar'

tar -cvf mytar.tar $include -X <(cat <<EOX
$exclude
EOX
)

The reason for using eval $mycommand is so that other users can edit the top of the script where exclude and include are defined rather than having to read through the code. Your second construct is elegant - but does not work on OpenSuse 11.4.
 

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BF_TAR(1)						    Bogofilter Reference Manual 						 BF_TAR(1)

NAME
bf_tar - shell script to write a tar file of a bogofilter directory to stdout SYNOPSIS
bf_tar [-r] [-R] bogofilter_directory DESCRIPTION
bf_tar bundles a bogofilter working directory in tar format and copies it to standard output (your console, or where you redirect it, see EXAMPLES below). OPTIONS
The -r option causes bf_tar to remove inactive log files after the archive has been written successfully. The default is to leave log files. The -R option causes bf_tar to remove inactive log files before the archive is written. This may reduce chances that the resulting archive is recoverable should it become damaged. The archive may be smaller though. The default is to leave log files. EXIT STATUS
The script exits with status code 0 if everything went well, and nonzero if it encountered trouble. EXAMPLES
o bf_tar ~/.bogofilter > outfile.tar Writes a standard .tar file containing the essential files from ~/.bogofilter to outfile.tar. o bf_tar ~/.bogofilter | gzip -9 -c > outfile.tar.gz Writes a gzipped .tar.gz file containing the essential files from ~/.bogofilter to outfile.tar.gz. o bf_tar `pwd`/mydirectory > outfile.tar Prepend $(pwd)/ or `pwd`/ if you want to specify an absolute path instead of a relative path. NOTES
This script is meant for use with Berkeley DB based bogofilter versions. This script requires a SUSv2 compliant pax utility. This script expects a SUSv2 compliant shell. Solaris systems should have the SUNWxcu4 package installed (when bogofilter is configured) so that /usr/xpg4/bin/sh can be used. AUTHORS
Matthias Andree Bogofilter 03/15/2010 BF_TAR(1)
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