After (optionally) writing the PID file, assume the user ID of
<i>user</i> and the GID of <i>group</i>, or, if the optional <i>group</i> was not
given, the default group of <i>user</i>. Exit if the privileges are not
After (optionally) writing the PID file, assume the user ID of
<i>user</i> and the GID of <i>group</i>, or, if the optional <i>group</i> was not
given, the default group of <i>user</i>. Exit if the privileges are not