Super-Simple Scripts

• Many scripts simply run a few commands that you would want to do frequently. For example:

  • #!/bin/sh
  • cat /dev/null > /var/log/messages
  • cat /dev/null > ~/root/.bash_history
  • cat /dev/null > /var/log/wtmp

• Note, sh is a symlink to bash and invokes a supposedly [Bourne] sh-portable environment

• Run this from cron every N hours (real motd in /etc/motd.in):

  • cat /etc/motd.in > /etc/motd
  • /usr/games/fortune -s >> /etc/motd

Notes: