Linuxカーネル
$ cat /proc/version
$ uname -a
Apache
$ /usr/local/apache/bin/httpd -v
$ /usr/local/apache/bin/httpd -l
Mysql
$ mysql –version
$ rpm -qa | grep mysql
$ rpm -qi mysql
postfix
$ /usr/sbin/postconf | grep mail_version
$ /usr/sbin/postconf
php
$ php –version