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Full Discussion: tar archives
Top Forums UNIX for Dummies Questions & Answers tar archives Post 3241 by sam_pointer on Wednesday 27th of June 2001 12:25:27 PM
Old 06-27-2001
Java tar archives

I have a tar archive which I believe may be corrupted, produced on an HP-UX 10.x box and written to a 4mm DDS-3 tape.

I understand that gnu tar has a -W (--verify) option which will attempt to verify the archive after it has been created. Am I right in saying that this option cannot be used to verify an existing archive?

Secondly, the native shipped HP tar does not include this verify option at all. Does there exist a program for verifying the integrity of tar files (written to a tape), either whilst creating the tar file or after the event?

As a foot note I must point out that this archive has never been gzip'ed.

Thanks for any input...
 

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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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