linux下apache的配置文件是 /etc/apache2/apache2.conf，apache在启动时会自动读取这个文件的配置信息。而其他的一些配置文件，如 httpd.conf等，则是通过include指令包含进来。
在apache2.conf里有sites-enabled目录，而在 /etc/apache2下还有一个sites-available目录，其实，这里面才是真正的配置文件，而sites- enabled目录存放的只是一些指向这里的文件的符号链接，你可以用ls /etc/apache2/sites-enabled/来证实一下。
所以，如果apache上配置了多个虚拟主机，每个虚拟主机的配置文件都放在 sites-available下，那么对于虚拟主机的停用、启用就非常方便了：当在sites-enabled下建立一个指向某个虚拟主机配置文件的链 接时，就启用了它；如果要关闭某个虚拟主机的话，只需删除相应的链接即可，根本不用去改配置文件。
sudo cp /etc/apache2/sites-avaliable/000-default.conf , 命名为 test.conf
2.修改配置文件：test.conf
<VirtualHost *:80>
# The ServerName directive sets the request scheme, hostname and port that
# the server uses to identify itself. This is used when creating
# redirection URLs. In the context of virtual hosts, the ServerName
# specifies what hostname must appear in the request's Host: header to
# match this virtual host. For the default virtual host (this file) this
# value is not decisive as it is used as a last resort host regardless.
# However, you must set it for any further virtual host explicitly.
ServerName www.test.com
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html/test/
ErrorLog /var/www/html/test/error.log
CustomLog /var/www/html/test/access.log combined
<Directory "/var/www/html/test">
Options FollowSymLinks
DirectoryIndex index.php index.html index.htm
AllowOverride All #注意这个地方的配置，会影响本地目录下的.htaccess的启用
Order deny,allow
Allow from All
</Directory>
# Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
# error, crit, alert, emerg.
# It is also possible to configure the loglevel for particular
# modules, e.g.
#LogLevel info ssl:warn
# For most configuration files from conf-available/, which are
# enabled or disabled at a global level, it is possible to
# include a line for only one particular virtual host. For example the
# following line enables the CGI configuration for this host only
# after it has been globally disabled with "a2disconf".
#Include conf-available/serve-cgi-bin.conf
</VirtualHost>建立链接文件：
sudo ln -s /etc/apache2/sites-available/test.conf /etc/apache2/sites-enabled/test.conf
或者： sudo a2ensite test.conf
4.重启apache 服务器
sudo /etc/init.d/apache2 restart
修改hosts(/etc/hosts)
// 增加一行 127.0.0.1 www.test.com
到这里基本就可正常访问了！
附：如果这里还需要对目录级的URL重写支持，继续往下：
终端运行
sudo a2enmod
程序提示可供激活的模块名称，输入：rewrite
成功会提示
rewrite already load
修改/etc/apache2/sites-enabled/test.conf (该链接指向的是站点配置文件)
把下的AllowOverride 属性改为All，保存。(上面我们已经配置为 All)
重新加载apache
sudo /etc/init.d/apache2 restart
更多Apache相关知识，请访问Apache使用教程栏目！
