<? $df_output = shell_exec('/bin/df -h'); $df_lines = explode("\n", $df_output); for ($i = 1, $lines = count($df_lines); $i < $lines; $i++) { if (trim($df_lines[$i])) { $fields = preg_split('/\s+/', $df_lines[$i]); print "Filesystem $fields[5] is $fields[4] full.\n"; } } ?>