/bin/tar: Old option `b' requires an argument.
Try `/bin/tar --help' or `/bin/tar --usage' for more information.
system /bin/tar czv
--exclude-from=/home/user1/scripts/perl/backup/excluded_files.txt -f
/mnt/mount_point/dir1/backup.tar.gz /home/user1/temp failed: 5
12 at /tmp/filename.pl line 12.