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On a Mac with OS X Lion I'm editing a bunch of photos in Preview via the Finder, and any that haven't been edited for a while pop up with an annoying choice of Unlock, Cancel or Duplicate. Well how can I select the whole folder and unlock them all?

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In general it doesn't bother me, it's only noticeable when operating on a bunch of files that you haven't worked on for 2 weeks. – justinhj Apr 14 '12 at 15:22
I can't test it, but maybe the annoying info is stored in some extended attribute with the files. Can you do a ls -l@ on such a photo? – slhck Apr 15 '12 at 8:04

put files into one folder and run

sudo chflags -R nouchg path/to/directory
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I tried that but the annoying popups persist. touch *.jpg works, but I still get a bunch of annoying "autosave could not save document". I've just set the autosave date to 1 year to shut it up. – justinhj Apr 14 '12 at 15:49
-1, obviously it doesn't work, and the uchg flag has nothing to do with it since it's been available much longer than the Auto-Save feature of Lion. – slhck Apr 15 '12 at 8:01
Sure works for me. – John Gardeniers Aug 17 '12 at 13:58

Even if don't use Time Machine, the preference in "System Preferences > Time Machine > Options > Lock documents" is still valid, and is enabled by default :S So, uncheck this to stop this behavior.

If it is locked in the same way downloaded files are, you can unlock them by removing the ._* files. Do the following in terminal:

cd /path/to/parent_folder
find . -name "._*" -exec rm '{}' ';'

it will ask for the administrator password. If you received no message after entering the password, it worked and your files should be unlocked.

NOTE: Be careful with the second command as it will delete all the files matched by the find. You can chech which files will be delete by running only

find . -name "._*"
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damn that's a dangerous command to type, if you make a mistake, boom :) – justinhj May 18 '12 at 4:55
@justinhj You can replace rm with echo and see what it'd remove. – slhck May 18 '12 at 8:56
@justinhj I'll add a note to the answer. – svallory May 19 '12 at 2:35
@slhck this also works for downloaded files :) – svallory May 19 '12 at 2:35
up vote 0 down vote accepted

Using the command line tool 'touch' works. This changes the last modified date on the file and thereby stops the autosave popup.

touch *.jpg
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