#!/bin/sh
case "$1" in
useradd|usermod|userdel|groupadd|groupmod|groupdel)
    export LC_ALL=C
    exec "pw" "${@}"
    ;;
passwd)
    export LC_ALL=C
    exec "$@"
    ;;
*)
    echo "Command '$1' is not allowed!"
    exit 1
    ;;
esac