1.My web server has gone down .When enter the right userid and right password,the operating sysytem never give a message back.when I enter a wrong userid and password ,the OS give me a wrong message back.

2.I login the linux OS by single user mode ,but cannot login network multiple user mode.

3.During the lauching of the linux OS ,I press 'I' chararter .Then I found the error message here:
Start service network (Y)es (N) (C) continue ?(Y)
/etc/rc.d/rc3.d/S10network :/etc/init.d/function/=No such file or directory
/etc/rc.d/rc3.d/s10... action :command not found

Start service apmd (Y)es ....
sbin/ava {h,u,v,r,i,R...}
h hid file
u unhide file
r execute as root
R remove PID forever
U uninstall adore
i make PID invisible
v make PID visible
starting apmdd fatal :Extra argument start [FAILED]