Particle CLI not found on mac OS catalina

I recently upgraded to macOS catalina. I was prompted to use zsh instead of bash - mistake. Now I can’t find or run particle. I am guessing macOS has squirrelled this away in some relocated items file. Can anyone who has sorted this help?

I upgraded to Catalina beta (mistake!) a while back. I actually changed my shell back from zsh to bash prior to that upgrade because of problems with zsh.

If you want to switch back, just use:

chsh -s /bin/bash

Thanks for switch back command. All back to normal now!