Changing the shell for root from git-shell

[pgu]

I accidentally changed the root shell to git-shell. Is there a way to change it back? I can su to root, but I don't have sudo access. I tried

[Naib]

What happens if you just do su not su -
_________________
#define HelloWorld int
#define Int main()
#define Return printf
#define Print return
#include <stdio>
HelloWorld Int {
Return("Hello, world!\n");
Print 0;

[pgu]

Same thing. I just get the message from git-shell

[Naib]

Looks like a reboot.

You don't need a rescue CD and all that.
Just boot, press 'e' to edit the boot command and add 'init=/bin/bash'
And let it boot. Then just nano /etc/passwd
_________________
#define HelloWorld int
#define Int main()
#define Return printf
#define Print return
#include <stdio>
HelloWorld Int {
Return("Hello, world!\n");
Print 0;

[Hu]

From an existing root shell, chsh root. Otherwise, use the rescue media.

[pgu]

I don't have an existing root shell and I don't have access to the console. I can boot from different media over the network though, but it's a bit of a hassle.

[Naib]

as I said, you don't need to boot from another medium, at teh GRUB screen just amend the kernel command to pass init=/bin/bash and you will boot directly to a bash prompt, from which you can edit /etc/passwd
_________________
#define HelloWorld int
#define Int main()
#define Return printf
#define Print return
#include <stdio>
HelloWorld Int {
Return("Hello, world!\n");
Print 0;

[pgu]

Thanks. I'm aware of the grub option, but as I said I don't have console access. Hence I can't supply parameters to grub. I managed to boot from a rescue image and mounted the partition and changed the shell.