I wanted to change the standard shell for my root user to bash but I got the path wrong. i typed /bin/bash instead of /opt/bin/bash. Now my /etc/passwd looks like this:
root:x:0:0:root:/root:/bin/bash
The problem is that I can no longer login via ssh. Additionally I can't su to root from an other user because of:
>su root
su: must be suid to work properly
Any suggestions?