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Top Forums UNIX for Advanced & Expert Users tar: how to preserve atime? (also on extracted version, not just original) Post 302268008 by frankie06 on Sunday 14th of December 2008 10:15:25 PM
Old 12-14-2008
Tools

That was quick. Thanks!


Quote:
Originally Posted by frank_rizzo
use the -p option when you extract it.

This does not seem to work though. See below an example where 2 files (with different atimes) are archived and extracted somewhere else. The last line of output shows that the atime was not preserved.

$ ls -lt origin/b*
-rw-r--r-- 1 dsilt2 dsilt2 4 2008-12-15 03:52 origin/bla2
-rw-r--r-- 1 dsilt2 dsilt2 4 2007-07-07 22:22 origin/bla1
$ ls -ltu origin/b*
-rw-r--r-- 1 dsilt2 dsilt2 4 2008-12-15 03:52 origin/bla2
-rw-r--r-- 1 dsilt2 dsilt2 4 2007-07-07 22:22 origin/bla1
$ cd origin/
$ tar --atime-preserve -cvpf archive.tar *
bla1
bla2
$ mv archive.tar ../destination/
$ cd ../destination/
$ tar xvpf archive.tar
bla1
bla2
$ ls -lt b*
-rw-r--r-- 1 dsilt2 dsilt2 4 2008-12-15 03:52 bla2
-rw-r--r-- 1 dsilt2 dsilt2 4 2007-07-07 22:22 bla1
$ ls -ltu b*
-rw-r--r-- 1 dsilt2 dsilt2 4 2008-12-15 04:01 bla1
-rw-r--r-- 1 dsilt2 dsilt2 4 2008-12-15 04:01 bla2
 

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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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