I had a new SSD disk on my mac and a few files got a lock icon on them. It’s possible to do a right click and untick the lock box but that’s slow process. Here is the command line for it
How to unlock multiple files on mac using terminal
- Open Terminal (Launch /Applications/Utilities/Terminal)
- Copy & paste this command at the prompt
chflags -R nouchg ~/Documents
- Press return.
You can also use different location, for instance:
chflags -R nouchg ~/Downloads
Hope that helps.