... especially since the tip is immediately followed by an explanation of how the author backs up a known good configuration file. The recovery mechanism shoul

... especially since the tip is immediately followed by an explanation of how the author backs up a known good configuration file. The recovery mechanism should surely be to restore that known good version, as you say. It also seems overcomplex to use sudo from an unprivileged user's crontab rather than just straight execution of the target command from the superuser's crontab. I infer that your # prompt is implying this, too. (-: