[root@localhost ~]# vim /usr/local/apache2/conf/extra/httpd-vhosts.conf<VirtualHost *:80>    DocumentRoot "/data/www"    ServerName www.test.com    ErrorLog "logs/test.com_error_log"    CustomLog "logs/test.com_access_log" combined     <IfModule mod_expires.c>        ExpiresActive on        ExpiresByType image/gif  "access plus 1 days"        ExpiresByType image/jpeg "access plus 24 hours"        ExpiresByType image/png "access plus 24 hours"        ExpiresByType text/css "now plus 2 hour"        ExpiresByType application/x-javascript "now plus 2 hours"        ExpiresByType application/javascript "now plus 2 hours"        ExpiresByType application/x-shockwave-flash "now plus 2 hours"        ExpiresDefault "now plus 0 min"    </IfModule></VirtualHost>

[root@localhost ~]# /usr/local/apache2/bin/apachectl -t[root@localhost ~]# /usr/local/apache2/bin/apachectl graceful