Strange problem with the PATH

[axiomaabsurdo]

[member=7644]DeepThought[/member]

I have accessed the grub, to select the option recovery, reset the passwords of the users but when I go to the terminal that only starts with a # some commands return an error

Code:

sulogin: failed to execute /bin/bash: No such file or directory

Now, from where I am now what do you think I could do?