An ACL or access control list is list of permissions attached to an object. It specifies which users/system processes have access to the object as well as what they are allowed to do.

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How can I get Quartz Composer to save files after the first time?

I'm learning how to use Quartz Composer (Version 4.6 (151.1)) running on Yosemite (10.10.5 (14F27)). I can successfully create a Quartz Composer document and save it to any folder. However, after ...
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Is it possible to use `tmutil delete` or another command to prune one file from multiple backups?

I'm having problems clearing our a backup drive. I want to get rid of a couple large files so I can preserve the other incremental backups. I can't use the tmutil delete command on entire backups ...
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ACL doesn't give write permission over AFP unless duplicated

I have a Mac Mini running OS X Mavericks 10.9.5 with Server 3.2.2. My server set up has a single share point that 5 iMacs access via AFP using a domain name and individual accounts. Each iMac is ...
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265 views

Flawed user permissions: cannot save files or open programs

I'm on OSX 10.9.1 and I changed settings on my user folder. As far as I can remember I "only" pressed cmd + i on the user folder and under access rights I chose apply to all sub folders. Don’t ask me ...
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Using ACL to allow users to add files but not subdirectories in a folder

I am on Mac OS Lion and wants to prevent users from creating sub directories inside a folder but at the same time users should be able to add files to the same directory The following command does ...
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56 views

How do I grant a second user complete access to a user's Home folder?

I want a second user (but NOT all users) to have complete read/write access to a user's Home folder – both users should have the same level of access on all files within, even those created by each ...
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259 views

Is there a way to modify keychain item ACL descriptions?

I'm importing my digital ID (X.509 certificate and private key for signing, verifying, encrypting, and decrypting messages) into the keychain. In the GUI I see my certificate and the corresponding ...
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Weird permissions

I moved to a new machine, and Migration Assistant failed miserably. I had to move files by hand, and in doing so some mighty strange things started happening. I have finally tracked these down. Many ...
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How do I remove file access for unknown user (as reported by Finder's File Info)?

File Info, under Sharing & Permissions, says "You have custom access" and lists: Name Privilege joe (user) Read & Write staff (group) Read & Write everyone Read only ...
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file not behaving as it should, permission problems

I cannot delete or move a file owned by me which I have read write permissions. Could anybody help me figure out why? The file is owned by me in group staff and perms are set to 644. The file is ...
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384 views

Can't write to ~/Library, even though permissions look OK

I'm totally stumped on this one — a Macbook Air, 10.9.2. As far as I can tell, I should be able to write to my Library directory. Everything I can see suggests I should be able to: [njvack@zot ...
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Mavericks: User no longer owner of Home folder and content

One of the Users (called: The_Problematic_User) of a Mavericks installed MacBook Pro is no longer owner of the Home folder and content. Here's what we've tried to no avail: restart computer and log ...
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Strange ACLs on OS X System

I have a folder on a HFS+ volume I can't delete. I already tried to get rid of the ACLs but somehow this doesn't worked out. The folder is calles CrashPlan.app. Here is what the terminal says: ...
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Permissions on network sharepoint weird OS 10.5.8

In my office we have a RAID array that is an external drive connected to a Server, running OS 10.4.11 Server, and several Sharepoints are defined on this drive. I mount these volumes on my desktop, ...
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987 views

Moving a folder with “sudo mv”, how to preserve ACLs?

I'm moving a whole folder from one volume to another (both HFS+), using sudo mv, and thought ACLs would be preserved. However at the end of transfer I see that they haven't been kept, and since mv ...
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545 views

Set inherited permissions on iLifeAssetManagement?

I have a second user account on my machine that is only used for iCloud syncing for my wife's apple id. In order to consolidate photostream photos I'm going to set up a process to pull new photos out ...
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290 views

mount AFP share, carrying the server's file ACLs through to the client

The goal: I've got a server sharing files via AFP. On the server, these files have ACLs. When I mount this share with a client, I'd like for the files that appear on the client to retain the original ...
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Stopping ACL inheritance from the command line in OS X Lion?

With the following folder structure on a file share: - Department (directory) + User1 (directory) + User2 (directory) + User3 (directory) Whenever I add an ACE to the Department directory, ...
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479 views

Time Machine and the dreaded negative sign

I am about to modify the file ownerships in my Time Machine disk, which uses ACLs. Since it is my (only) backup disk, I thought I'd solicit comments on the script before I run it. The objective is to ...