バージョンの調べ方

php
$ php -v
PHP 4.4.4 (cil)(built: Nov 1 2006 18:12:33)
Copyright (c) 1977-2006 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologyes

MySQL
$ mysqladmin version
mysqladmin Ver 8.41 Distrib 4.1.13a, for portbld-freebsd8.0 on powerpc Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB. This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to modify and redistribute it under the GPL license

Server version 4.1.13a_log
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /var/mysql.sock
Uptime: 3 days 3 hours 37 min 24 sec

Threads: 1 Questions: 4365 Slow queries: 0 Open: 31 Flush tables: 1 Open tables: 28 Quereis per second avg: 0.016

Perl
$ perl -v

This is perl, v5.8.6 built for darwin-thread-multi-2level
(with 3 registered patches, see perl -V for more detail)

Copyright ……….

Apache
$ httpd -v
Server version: Apache/1.3.33(Darwin)
Server built: Mar 20 2005 15:08:27