To exclude files from the backup, create a file called Backup_exclude in the top backup directory. This file contains a list of patterns, one per line; each of these patterns can exclude zero, one, or many files. These patterns are regular expressions that can contain wildcards such as ``*'' or ``?''. An example Backup_exclude file might contain:
tmp
backup
mnt
cdrom
*.aux
*.bak
*.jou
*.log
*.dvi
*~
.*~
*.o
#*#
core
dead.letter