SDDM と GDM を切り替えるスクリプト

switch-sddm-and-gdm.sh

#!/bin/bash

set -euC
# set -o pipefail

# exec 5>> /tmp/xmosh/shell-script-debug.out
# BASH_XTRACEFD="5"
# PS4='$LINENO: '
# set -x

function sc() {
  sudo systemctl "$@"
}


gdm_status="$(
  systemctl is-active gdm ||:
)"

sddm_status="$(
  systemctl is-active sddm ||:
)"

if [ "$gdm_status" = active ]
then
  sc stop gdm
  sleep 1
  sc start sddm
  exit 0
elif [ "$sddm_status" = active ]
then
  sc stop sddm
  sleep 1
  sc start gdm
  exit 0
fi

echo "Unknown state: gdm = ${gdm_status}, sddm = ${sddm_status}"
exit 1