macos – I’ve manually copied files from my time machine backup drive and now I cannot delete them from my computer
I’ve sorted it out. First, you need to look at the ACLs that got copied along with the files.
ls -le /path/to/dir
Once you’ve done that you can see that everything had this:
0: group:everyone deny write,delete,append,writeattr,writeextattr,chown
So, what I did was add a new ACL policy to the directory by doing this:
chmod -R +a "admin allow read,readattr,readextattr,readsecurity" dir
Followed by:
sudo rm -rf dir
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