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Full Discussion: Pipelining with tar
Top Forums UNIX for Dummies Questions & Answers Pipelining with tar Post 302465055 by DGPickett on Thursday 21st of October 2010 03:01:29 PM
Old 10-21-2010
Usually, you can find relative paths and control where it picks up and drops with cd on each end!

If your net is so fast and your cpu is so slow, compress is faster than gzip -1.

I feel like I am overhearing half of a phone conversation. Can you summarize all your needs in one list?



---------- Post updated at 03:01 PM ---------- Previous update was at 02:55 PM ----------




Quote:
Originally Posted by Corona688
It's trying to extract it in /opt/ which won't work unless you're root. And if you're still testing don't do it as root! Stick in your home dir and test in there.

Your parameters don't look quite right.

Code:
tar cvf - usr/local/ | gzip -c - | gunzip -c - | tar -C opt/ -xvf -

By doing 'opt/' instead of '/opt/' you can test in an opt dir inside your current dir instead of stomping over /opt/ itself.
The '-c -' on gzip/gunzip actually do nothing, and the point of bothering to compress is to put rsh or ssh in the chain before gunzip and so keep the network from being such a bottleneck. If that was no concern, rcp -rp would move it all.
 

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LEARN ABOUT SUSE

bf_tar

BF_TAR(1)																 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.

								    07/23/2007								 BF_TAR(1)
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