shutdown.sh

#!/bin/bash

set -e
lines=`journalctl -u gitlab-runner --since "30 minutes ago" | wc -l`

echo "Number of lines in jogfile: $lines" 

if [ "$lines" -le 1 ]; then
    uptime=`awk '{print $0/60;}' /proc/uptime`
    if [ $(echo "$uptime > 20" | bc) -ne 0 ]; then
        echo "We have less than one line and uptime is 20 minutes; shutting server down!"
    else
        echo "Uptime is less then 20 minutes, only $uptime"
    fi
else
    echo "More then one line; doing nothing"
fi