A customer did this on his server once while I sat with him to add something. Since restoring the crontab from backups would have been a little inconvenient for

A customer did this on his server once while I sat with him to add something. Since restoring the crontab from backups would have been a little inconvenient for such a small thing, I grepped the log files what commands were run by cron in what interval and had it rewritten in a few minutes.