Is a mail filter designed to handle recurring cron mails
cron-deja-vu <options>
cron-deja-vu is a filter for cron generated mail. it expects mails which only differ in small amounts. Matching is done, by matching line by line against already learned mails. If a mail is matched, the header X-deja-vu is set to yes. Otherwise the header is set to, no and if specified the header X-deja-vuline will contain lines of the mail which did not match.
--version
show program's version number and exit
-h, --help
show this help message and exit
-m <filename of mail>, --mail=<filename of mail>
test against mail from filename
-a <Maildir>, --add=<Maildir>
build database from maildir
-s <number of lines>, --show=<number of lines>
show first <num> of not matched lines in header
-d, --debug
show debug output