headless

#!/bin/bash

CFG_FILE=$(ls /boot/headless* 2>/dev/null)

if [ "$CFG_FILE" != "" ]; then
    echo "Headless mode enabled"
    echo "Disabling initial-setup service"
    systemctl stop initial-setup.service
    systemctl disable initial-setup.service

    CFG_OPTS=$(grep '[0-9]' "$CFG_FILE")

    if [ "$CFG_OPTS"  != "" ]; then
            IPADDR=$(sed -n 's/IPADDR=//p' $CFG_FILE)
            NETMASK=$(sed -n 's/NETMASK=//p' $CFG_FILE)
            GATEWAY=$(sed -n 's/GATEWAY=//p' $CFG_FILE)

            cat << EOF > /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
IPADDR=$IPADDR
NETMASK=$NETMASK
GATEWAY=$GATEWAY
BOOTPROTO=static
ONBOOT=yes
NM_CONTROLLED=yes
EOF
 
            systemctl restart NetworkManager.service
    fi
fi

# Always disable headless-check.service after first use.
echo "Disabling initial-setup service"
systemctl disable headless-check.service