[root@localhost ~]# php -v
PHP 5.2.16 (cli) (built: Dec 17 2010 14:09:03)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2010 Zend Technologies
[root@localhost ~]# apachectl -v
Server version: Apache/2.2.16 (Unix)
Server built: Aug 27 2010 13:40:02
[root@localhost ~]# mysql -v
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
[root@localhost ~]# mysql -V ## mysql用的是大写V
mysql Ver 14.14 Distrib 5.1.50, for redhat-linux-gnu (i686) using readline 5.1
[root@localhost ~]# cat /proc/version
Linux
version 2.6.18-128.el5xen (mockbuild@builder16.centos.org) (gcc version
4.1.2 20080704 (Red Hat 4.1.2-44)) #1 SMP Wed Jan 21 11:55:02 EST 2009