今天在网上发现了一个很好用的管理Ubuntu下开关启动的软件，叫做sysv-rc-conf
使用命令行：
tf@ubuntu:/etc/apache2$ sudo update-rc.d -f apache2 remove Removing any system startup links for /etc/init.d/apache2 ... /etc/rc0.d/K09apache2 /etc/rc1.d/K09apache2 /etc/rc2.d/S91apache2 /etc/rc3.d/S91apache2 /etc/rc4.d/S91apache2 /etc/rc5.d/S91apache2 /etc/rc6.d/K09apache2
恢复时使用：
tf@ubuntu:/etc/apache2$ sudo update-rc.d apache2 defaults Adding system startup for /etc/init.d/apache2 ... /etc/rc0.d/K20apache2 -> ../init.d/apache2 /etc/rc1.d/K20apache2 -> ../init.d/apache2 /etc/rc6.d/K20apache2 -> ../init.d/apache2 /etc/rc2.d/S20apache2 -> ../init.d/apache2 /etc/rc3.d/S20apache2 -> ../init.d/apache2 /etc/rc4.d/S20apache2 -> ../init.d/apache2 /etc/rc5.d/S20apache2 -> ../init.d/apache2
原文：http://www.cnblogs.com/tfanalysis/p/4107389.html