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Top Forums Shell Programming and Scripting How to differentiate two tar files Post 302304312 by siri_14 on Monday 6th of April 2009 05:32:58 AM
Old 04-06-2009
Hi all,
Thanks for your replies.
As i am a newbie to scripting i am not sure how to proceed.I am looking for a script that differentiates between two tar files without extracting(due to space issues) and output the files that have been changed.Please note that these tar files will contain jar files and inside those there are files.
The structure is :
tarfile :it is an external directory inside that there are jars which are also directories.and inside that there are files.and i have to differentiate between such two tarfiles that wich all files have been changed inside that.it is not always necessary that there is a difference between two tarfiles.It may happen that nothing has changed.
I work in java and javascript and am not so comfortable with unix.So requesting your help.
Thanks in advance.
 

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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 10/22/2012 BF_TAR(1)
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