Macos Catalina error after update: unable to run colorls

Question

Updating to macOS Catalina gives error on opening terminal

ERROR:  Can\'t find Ruby library file or shared library colorls
usage: dirname path
/         


        

Answer 1

What solved it for me was to:

1. Open Xcode
2. Click on the Xcode tab at top left corner
3. Open preferences
4. Click on Locations Tab
5. Select Command Line Tools

For some reason, there were no command line tools selected, so this caused issues for me. I downloaded a beta version of Xcode, and none were selected when I updated to the latest version.