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

This fixed for me:

$ sudo gem update
$ sudo gem install colorls

Catalina now ships with Ruby 2.6, instead of 2.3. My guess is that with the upgrade, all custom installed gems became "untracked" by the new Ruby/Gem package system. With that, gem update doesn't take care of updating colorls.

Make sure you reinstall XCode command line tools, update/upgrade brew, npm and others.

Answer 2

Error: gem native extension error while installing cocoapods

Answer: Follow below 3 Steps issue will be fixed.

Step 1: Open XCode go to below path

XCode > Preferences > Locations > Command Line Tools (select-Xcode)

Step 2: Open Terminal- Paste the below Command

curl -L https://get.rvm.io | bash -s stable

Reopen Terminal -Paste the below Commands

Note: It will take 3-5 minutes

rvm install ruby-2.6

rvm use ruby-2.6.3

rvm --default use 2.6.3

Step3:

Open Terminal- Type below Command

sudo gem install cocoapods

Now gem native extension error while installing cocoapods will not come

Issue resolved.

Answer 3

This worked for me:

xcode-select --install sudo gem install colorls -n /usr/local/bin

Answer 4

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.

Answer 5

Here is how I solved it:

1. sudo xcode-select --install
2. Install rbenv with brew install rbenv
3. Add eval "$(rbenv init -)" to the end of ~/.zshrc or ~/.bash_profile
4. Install a ruby version rbenv install 2.6.0
5. Select a ruby version by rbenv rbenv global 2.6.0
6. Open a new terminal window.
7. Verify that the right gem folder is being used with gem env home (this should report something in your user folder, not system wide).

After this I installed colorls again using sudo gem install colorls

If getting error:

ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /usr/bin directory.

Try installing colorls using cmd:

sudo gem install colorls -n /usr/local/bin

After this you see colorls is installed successfully and new terminal works fine.