How to reset default shell for root from user space I've switched my bash to zsh in root using 
chsh -s /usr/bin/zsh root

After when I change back to bash, I type the wrong path:
chsh -s /usr/bin/bash root

Now I cannot enter root and I get this prompt, how can I reset it?

user@ip:~$ sudo su
Cannot execute /usr/bin/bash: No such file or directory
Type the following->

sudo -s


Enter your admin password. The prompt should now end in #.
Enter->

chsh -s /bin/sh root


and exit the "root" shell and test.