l0:0:wait:/etc/rc.d/rc 0 l1:1:wait:/etc/rc.d/rc 1 l2:2:wait:/etc/rc.d/rc 2 l3:3:wait:/etc/rc.d/rc 3 l4:4:wait:/etc/rc.d/rc 4 l5:5:wait:/etc/rc.d/rc 5 l6:6:wait:/etc/rc.d/rc 6
# Trap CTRL-ALT-DELETE
ca::ctrlaltdel:/sbin/shutdown -t3 -r now
# When our UPS tells us power has failed, assume we have a few minutes # of power left.
Schedule a shutdown for 2 minutes from now.
# This does, of course, assume you have powerd installed and your # UPS connected and working correctly.
pf::powerfail:/sbin/shutdown -f -h +2 \
# If power was restored before the shutdown kicked in, cancel it.
pr:12345:powerokwait:/sbin/shutdown -c \
# Run gettys in standard runlevels 1:2345:respawn:/sbin/mingetty tty1
2:2345:respawn:/sbin/mingetty tty2 3:2345:respawn:/sbin/mingetty tty3 4:2345:respawn:/sbin/mingetty tty4 5:2345:respawn:/sbin/mingetty tty5 6:2345:respawn:/sbin/mingetty tty6
# Run xdm in runlevel 5
x:5:respawn:/etc/X11/prefdm -nodaemon 然后把文件删除，重启系统： [root@51cto ~]# rm /etc/inittab
rm：是否删除 一般文件 “/etc/inittab”? y [root@51cto ~]# reboot
结果显示不存在系统运行的进程，就是因为/etc/inittab的丢失造成的，当然修复的话不可能
手写进去了，那么多内容啊！
这时候进入救援模式，安装initscripts软件包，自动创建/etc/inittab文件 当然要通过mount /dev/dhc
/media/cdrom/挂载光驱，然后安装rpm包
登陆了系统，可以查看到该文件了！