my $svc_acct = qsearchs( 'svc_acct', { 'username' => $target_user } );
die "username $target_user not found\n" unless $svc_acct;
-print $svc_acct->seconds_since_sqlradacct( str2time($start), str2time($stop) ).
+print $svc_acct->seconds_since_sqlradacct(
+ str2time($start),
+ $stop ? str2time($stop) : time ).
"\n";
sub usage {