A memo for my upgrading to macOS Catalina


I started upgrading my mac to macOS Catalina in 12th Oct. 2019.

Initial step

I downloaded 8GB and started installing. After starting, I went to bed.

After my getting up, it needed to be rebooted. Then, I waited for completing the install.

Routine work

Xcode command line tool

I just executed xcode-select --install.



Seeing brew doctor, I followed the suggestion.

Disable 全角スペース


There was no Ruby interpreter except the system. Thus I reinstalled the latest Ruby by rbenv. I executed rbenv install 2.6.5.