invalid root shell !!!

[tweeester]

Hello,

Problem is following (SOlaris 2.8 on SunSparc Workstation)

- I logged in as a simple users
- su root
- change /etc/passwd, change root's shell from /sbin/sh to /sbin/bash
- I can't login now as a root (or su root) becouse /sbin/bash is invalid file path (message "no shell&quot

What can I do? My boss will kill me ...

Please help
Tweeester

 

[bluedevils]

try using /etc/shells to list valid shells

 

[tweeester]

I know that /sbin/bash is invalid shell, it supposed to be /usr/bin/bash but I misstyped it, now I cant change passwd file becouse only root has right to write to it

Does anyone know how to reboot machine into single-user mode ???

 

[tuka]

You will have to halt your system and go to the ok prompt.At
the ok prompt boot from the cdrom.
example:
ok> boot cdrom -sw

after booting up do a fsck on your disk partition.
example: fsck /dev/rdsk/c0t0d0s0
After fscking then mount your root partition to /mnt
example: mount /dev/dsk/c0t0d0s0 /mnt
Then cd to /mnt/etc
vi the passwd file and change the shell back .
halt and reboot normally.

 

[tweeester]

10x, I will try this.

 

[bluedevils]

In single user mode you should be able to get a shell regardless of what is entered into /etc/passwd.

 

[Guest_imported]

I've made that mistake in a Sun class. Tuka is all over it. One thing to note is that you need to set your term to sun so in the c-shell setenv TERM sun <return> will suffice. Also I am not familiar with the w flag for booting. What does that do Tuka?

 

[tweeester]

Sorry, I forgot to mention that I succeeded following tuka's advice, booting from CD, etc..., BTW, single-user mode was not accessible (when booting from HD) - it refused to eneter signle user mode (also: Invalid shell message) and end-up switching into run-level 3...

10x again tuka!