tail -F /var/log/munin/munin-update.log | grep -E ‘WARNING|ERROR|FATAL’
tail -F /var/log/munin/munin-update.log | grep -E ‘ERROR|FATAL’
tail -F /var/log/munin/munin-update.log | grep -E ‘WARNING|ERROR|FATAL’
tail -F /var/log/munin/munin-update.log | grep -E ‘ERROR|FATAL’