#!/bin/bash set -e IP_V4_ADDRESS= while true; do # wait for if lxc list ss-mgmt | grep -q enp5s0; then break; else sleep 1 fi done while true; do IP_V4_ADDRESS=$(lxc list ss-mgmt --format csv --columns=4 | grep enp5s0 | grep -Eo '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}') if [ -n "$IP_V4_ADDRESS" ]; then # give the machine extra time to spin up. break; else sleep 1 printf '.' fi done export IP_V4_ADDRESS="$IP_V4_ADDRESS"