I installed fishfish(a user-friendly interactive command line shell) on a Linux server, later somebody uninstalled it but I don't know it. After I run
chsh -s /usr/local/bin/fish without caution, I cannot login the server now. Error message "login: no shell: No such file or directory" showed up which apparently says that shell fish do not exist anymore.
The server provides only a CLI interface, so how can I change the login shell when I cannot even login?