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I am trying to edit the file /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/Exceptions.plist (It is a binary plist) but I always receive the same error (I don't have enough permissions to do it).

I tried some ways to do it with no lock. These are the things I tried:

1) Open this file with XCode 7 beta, I changed the value I was looking for and when I tried to save the changes I couldn't because I didn't have enough permissions

2) I ran this command sudo nvram boot-args="kext-dev-mode=1 rootless 0" in the terminal and I restarted trying to edit the file like in 1). Same error.

3) I copied the file to my desktop, I changed the value I need to change I save it. After that, I tried remove the original file and copy the new one. Same error.

4) I tried to unlock the file from Finder (and after that I tried to change the permissions from Terminal) but I couldn't.

I am totally lost, I don't know what else to try to edit and change that file. Do you have any suggestion?

UPDATE 1
This is the output of ls -l@AeO Exceptions.plist

-rw-r--r-- 1 root whell restricted,compressed 63573 Jun 11 20:05 Exceptions.plist

SOLUTION

  • I edited the file /System/Library/Sandbox/rootless.conf

  • I commented the line with the path where I want to change the file

  • I restarted my computer and change the file (with sudo)

  • I edited the file /System/Library/Sandbox/rootless.conf again and I uncomment the line previously commented

  • I restarted my computer again and voila :)

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  • Can you run ls -l@AeO (that's a lower case ell and a capital oh) on the file and on the directory it's in, so we can see how it's protected (permissions, owner/group, ACLs, file flags, etc.)? Edit/update your question with the output. – Spiff Jul 3 '15 at 23:35
  • I added the output of the ls command – CrApHeR Jul 3 '15 at 23:48
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How about:

sudo vi /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/Exceptions.plist

Well, that would work if it's a text plist. If it's a binary plist, you'll have other troubles.

In that case, after editing it like you did in attempt #3, try this:

sudo cp ~/Desktop/Exceptions.plist /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/Exceptions.plist
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  • It is a binary plist. I forgot to mention that, I'll edit my question. – CrApHeR Jul 3 '15 at 23:42
  • About the commands, all the commands I ran were with sudo. I think the problem is related with the rootless feature in OSX El Capitan. – CrApHeR Jul 3 '15 at 23:49
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This is the solution I found (If anyone find a better or easier solution please post as an answer)

  • I edited the file /System/Library/Sandbox/rootless.conf

  • I commented the line with the path where I want to change the file

  • I restarted my computer and change the file (with sudo)

  • I edited the file /System/Library/Sandbox/rootless.conf again and I uncomment the line previously commented

  • I restarted my computer again and voila :)

Improve this answer

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