What to do if Operation not permitted is displayed when you execute a command in the terminal

Rails Intermediate Tutorial App Creation

When I tried to run rails s by routing to the top page and creating a controller in the middle of

Terminal


Operation not permitted

, An error statement was displayed.

Solution

System Preferences-> Security & Privacy-> Privacy-> Select Full Disk Access from the list on the left-> Check Terminal.

This solved it by restarting the terminal.

Reference site

https://gori.me/mac/mac-tips/112082

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