I have something like this on linux in crontab
mysqldump  test  -u user –pwd  > /path/db-`date +\%Y-\%m-\%d`.sql
This sucks, coz linux has log of the things beeing executed that anyone able to penetrate can see, not to mention anyone with that ability can see contence of crontab file.

+ anyone with live cd can see & copy ewerything.

Any idea how to hide pwd for db & pwd zip the thing , having auto backup at the same time ? Disk encryption is not optional here I think, as it is pointless as things can go bad when sxstem is running.