高手帮忙看看,这问题乍办?

[coderzhu@localhost coderzhu]$ init 3
bash: init: command not found
[coderzhu@localhost coderzhu]$ init 3
bash: init: command not found
[coderzhu@localhost coderzhu]$ su
Password:
[root@localhost coderzhu]# init 3
bash: init: command not found
[root@localhost coderzhu]# init 3
bash: init: command not found
[root@localhost coderzhu]# init 1
bash: init: command not found
[root@localhost coderzhu]# init 2
bash: init: command not found
[root@localhost coderzhu]# init 4
bash: init: command not found
[root@localhost coderzhu]# init 5
bash: init: command not found
[root@localhost coderzhu]# init 6
bash: init: command not found
[root@localhost coderzhu]# init
bash: init: command not found
[root@localhost coderzhu]# whereis init
init: /usr/src/linux-2.4.20-8/init /usr/src/linux-2.4/init /sbin/init /etc/init.d /usr/share/man/man8/init.8.gz
[root@localhost coderzhu]#


哪里有问题?我原来可以的呀!今天突然发现不行了!!!
但用Ctrl+Alt+F6可以了

/sbin/init 3

xieixele
wo de zhongwen  shu ru fa zhi nen zai zhong duan shi yong le!
help me ! banzhu