List of test driven development resources (TDD) for bash in bash

Tools and utilities:

https://code.google.com/p/bsfl/ - Bash Shell Function Library
https://code.google.com/p/shflags/ - Shell Flags – command-line flags module for Unix shell scripts

https://code.google.com/p/pyrering/ - Test case runner to manage command line test scripts.

http://joyful.com/shelltestrunner/ - shelltestrunner
http://bmizerany.github.io/roundup/ -  unit testing tool for running test plans
https://github.com/lehmannro/assert.sh - test-driven development in the Bourne again shell

Q&A lists:

http://stackoverflow.com/questions/971945/unit-testing-for-shell-scripts

http://stackoverflow.com/questions/1315624/bash-and-test-driven-development

https://github.com/lehmannro/assert.sh

If you have any suggestions to add to the above, please leave a comment.