means, to be brief, that the process is owned by the same user, or we are
the super-user). This is a useful way to check that a child process is
alive and hasn't changed its UID. See L<perlport> for notes on the
means, to be brief, that the process is owned by the same user, or we are
the super-user). This is a useful way to check that a child process is
alive and hasn't changed its UID. See L<perlport> for notes on the