Ubuntu下安装 ircd-irc2：
sudo apt-get install ircd-irc2
配置文件的目录/etc/ircd，文档目录/usr/share/doc/ircd-irc2
配置IRC host name：
sudo vim /etc/ircd/ircd.conf
M:irc.localhost::Debian ircd default configuration::000A
重启：
sudo service ircd-irc2 restart