Jay Lake (jaylake) wrote,
Jay Lake
jaylake

[help] Help on stupid Mac tricks

I need some help with finding files on a Mac. While I generally consider myself a power user, this one has me a bit stumped.

Say I have two drives, with files like so:

Drive 01Drive 02
File AFile A
File CFile B
File DFile C
File FFile D


How do I search in the Finder, or Spotlight, or on the Darwin command line, to locate those files on Drive 02 which are not also on Drive 01? Ie, in the above array, I want to detect that Drive 02\File B exists, and is not present on Drive 01. I don't care about Drive 1\File F...I already know where it is.

(Yes, I messed up a backup-and-restore a while back. I caught it before I'd wiped the now-displaced data, but I'm finally getting to the point where I need to retrieve it from the idled backup disk so I can put that back into service.)
Tags: help, tech
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