Learn
Working with files, terminal and AI on a Mac.
Move files instead of copying them on a Mac
Move files instead of copying them on a Mac: why dragging to another disk leaves the original behind, the four ways to force a move, and what changes underneath.
What actually happens after a duplicate is deleted
Deleting a duplicate file on a Mac has four possible outcomes, not one. What breaks, what syncs to other devices, when the space returns, and how long the undo lasts.
Free duplicate file removers on Mac and what they miss
Free duplicate file removal software on a Mac reports space it cannot free. Here is what APFS clones do to the count, which free tools are still maintained, and a check to run first.
Compare folders and files on a Mac from the command line
A folder compare command answers a different question depending on which one is used. Here is what diff, rsync and checksum lists each measure on macOS, and what none of them can see.
What Finder tags are actually good for
Apple file management on a Mac comes down to folders, tags and search. Here is what tags really are, where they survive, where they vanish, and how to set them up so the system still works in a month.
Using another app as Finder: what actually changes
Searching as-finder usually means wanting another app to stand in for the Finder. Here is which routes into a file window can be redirected, and which rules change once it is not Finder.
The batch command to rename a file, on a Mac
Looking for the batch command to rename a file on a Mac? The Windows one is not here. Build the equivalent, save it as a script, and keep it from overwriting.
Batch rename files on a Mac without losing the originals
Batch rename files on a Mac safely: how to preview the result, keep a reversible record, use undo before it expires, and know what else points at those names.