grep -Ei 'proc nsaaad.*(SIGNALED|EXITED)|maximum number of restarts|Pitboss declaring system failure|All monitored processes have exited, rebooting' /var/log/ns.log
grep -nF '213.209.159.55' /var/log/ns.log
zgrep -nF '213.209.159.55' /var/log/ns.log*.gz