Opening Terminal shows a list of ttys - unable to use
You can run Bash with all startup scripts disabled to get around problems with startup scripts: choose Shell > New Command and run bash --noprofile.

See the Bash man page for more information about the Bash command-line options and startup files: x-man-page://1/bash

Also note that you can lookup and view man pages in Terminal even when your shell isn't working, by clicking on the Help menu and entering a topic in the search field. Terminal will display matching man pages. Choose one from the Help menu to view it in a new window. You can also open an x-man-page: scheme URL from any application.