# 2024-03-04 [Unit] Description=VM define env NET(work) Before=docker.service After=network-online.target After=systemd-networkd-wait-online.service [Service] Type=oneshot ExecStart=/usr/bin/bash -c 'IFACE=$(ip r |head -1 |awk \'{print $5}\') && echo "IFACE=$IFACE" > /etc/env/net' ExecStart=/usr/bin/bash -c 'IFACE=$(ip r |head -1 |awk \'{print $5}\') && echo "SUBNET=$(ere_match_ip="[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}" && read ip < <(grep -oP $ere_match_ip <<< $(ip r |grep $IFACE |head -1 |awk \'{print $3}\')) && echo $ip)" >> /etc/env/net' ExecStart=/usr/bin/bash -c 'IFACE=$(ip r |head -1 |awk \'{print $5}\') && echo "IP=$(ip r |grep $IFACE |tail -1 |awk \'{print $9}\')" >> /etc/env/net' [Install] WantedBy=network-online.target WantedBy=multi-user.target