<html><head><title>Using popen() to read the output of the UNIX who command</title></head><body><h2>Administrators currently logged on to the server</h1><?php$ph = popen( "who", "r" ) or die( "Couldn't open connection to 'who' command" );$host="www.navioo.com";while ( ! feof( $ph ) ){ $line = fgets( $ph, 1024 ); if ( strlen( $line ) <= 1 ) continue; $line = ereg_replace("^([a-zA-Z0-9_-]+).*", "<a href="mailto:\1@$host">\1</a><BR>n",$line ); print "$line";}pclose( $ph );?></table></body></html>
