He clicked the tab at the top of the File Explorer window—a ribbon of options that most people scroll past. In the Show/hide section, there was a simple checkbox: Hidden items .
Alex’s home server ran Ubuntu Server—no graphical interface, just a terminal. Here, hiding files is also a matter of the leading dot. To see them, you don't change a setting; you change the command. how to unhide hidden folders
killall Finder
He clicked it.
To see them, Alex had to speak the terminal's language. He opened (found in Applications > Utilities). The blinking cursor awaited a command. He clicked the tab at the top of
The size column confirmed it: 450GB. He could now delete it with rm -rf .old_VMs or move it back into visibility by renaming it to remove the dot: mv .old_VMs Old_VMs . Here, hiding files is also a matter of the leading dot