systemd-first-boot-script/scripts/02-password

#!/bin/bash
# Licence : GPL v3
# Author: Laurent HUBERT
#
# Changes the root password
#
cat <<EOF
##################################
# Changing super-user password   #
##################################
EOF
status=1

while [ 0 -ne "$status" ]
do
  passwd
  status=$?
  if [ 0 -ne "$status" ]
  then
    echo "Error changing super-user password"
    echo "Please try again"
  else
    cat <<EOF
**********************************
* super-user password : changed  *
**********************************
EOF
    exit 0
  fi
done

echo "An error occurred changing super-user password"
exit $status