Questions tagged [macos]

Apple's Unix-based operating system. Use for questions about the operating system or to provide OS context. For Mac hardware questions, use [mac]. Questions about using macOS on non-Apple hardware ("Hackintosh"), are off-topic.

About macOS

macOS is a Unix-based operating system created and sold by Apple Inc. for their Macintosh computers. It first debuted in 1999 with Mac OS X Server 1.0. It is based off of NeXTSTEP, NeXT's operating system, which in turn is based off of the Mach kernel. The X in OS X is the Roman numeral for ten and such, pronounced as ten and not as a normal "x".

Apple rebranded OS X as macOS with the release of 10.12 (Sierra) in June 2016.

How to use the tag

  • This tag is for any and all questions related to OS X. Questions about the hardware should be tagged instead.

  • It is against the Mac OS X EULA to install OS X on any non-Apple branded hardware ("Hackintosh"). Hackintosh questions are considered off-topic for Super User.

Related Tags

There are several related tags for designed to specify the version of OS X in use such as:

  • – macOS 10.13 (High Sierra), the latest public version, adding APFS as the default file system, and enhancements to Photos and Safari.

  • – macOS 10.12 (Sierra), adding Siri, universal clipboard, and enhancements to Messages and Photos.

  • – OS X 10.11 (El Capitan), adding split-screen view, System Integrity Protection, and support for the Metal graphics API.

  • – OS X 10.10 (Yosemite), adding Handoff, iPhone calls, SMS, Instant Hotspot, and a new dark theme.

  • – OS X 10.9 (Mavericks), adding iBooks and Maps, and focusing on power-users such as better multi-display support.

  • – OS X 10.8 (Mountain Lion), adding Notification Center, Reminders and Notes.

  • – OS X 10.7 (Lion), which included new features such as full disk encryption, Mission Control, Auto-resuming apps and additional support for multi-touch gestures.

  • – OS X 10.6 (Snow Leopard), an upgrade that primarily focused on speed and stability.

  • – OS X 10.5 (Leopard), which introduced many new features such as a redesigned Finder, the "Spaces" desktop management and the Time Machine backup utility.

  • – OS X 10.4 (Tiger), which introduced the Spotlight search, the Automator scripting tool and Dictionary.

  • – OS X 10.3 (Panther), which updated Finder and introduced Exposé, the File Vault encryption and the Safari browser.

  • – a specialized server version for OS X which used to be released along with the "normal" OS X versions. As of 10.7 Lion, OS X server additions can be installed as an application package through the Mac App Store.

Questions about OS X can also be asked on Ask Different, which is focused on Apple products.

macOS on Wikipedia.

21846 questions
14 answers

macOS keeps asking my ssh passphrase since I updated to Sierra

It used to remember the passphrase, but now it's asking it to me each time. I've read that I need to regenerate the public key with this command, which I did: ssh-keygen -y -f id_rsa > but it didn't fix anything. How can I make macOS…
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Permissions on private key in .ssh folder?

I changed my permissions in my .ssh folder and now when I use a piece of software that uses my private key, I have to type my password each time. What should my permissions be on my id_rsa file to not have to type a password each time I use an app…
Jody G
13 answers

Mac OS X equivalent of the Ubuntu "tree" command

Is there an equivalent to the Ubuntu tree command for Mac OS X?
Misha Moroshko
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20 answers

How to encode base64 via command line?

Is there a terminal command in Mac OS X which will base64 encode a file or stdin?
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10 answers

In Mac OS, what is the keyboard shortcut to switch between windows of the same application?

I often use the Cmd+Tab shortcut to switch between different applications (for example: Xcode and Google Chrome), but is there a shortcut to switch between different windows of the same application (for example, from one window in Google Chrome, to…
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21 answers

Move an off-screen window back on-screen on Mac OS X

It seems that Mac OS X 10.6.1 Snow Leopard has a tendency to leave some windows off-screen at times, especially when I disconnect an external monitor from my MacBook. How can I move the window back on-screen when it's not possible to grab the title…
Matthew Rankin
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17 answers

"Show desktop" keyboard shortcut in Mac OS X

I am using a MacBook Pro with Mac OS X 10.5. Is there a similar function to "show desktop" (shortcut is WIN+D) on a Mac?  It should hide all applications and show a clean desktop.
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6 answers

How do you prevent the dock from switching monitors in macOS Monterey?

In Mavericks, Apple introduced a "feature" where if you hover at the bottom of any screen the dock pops up on that screen. This is disrupting my workflow as I am constantly having the dock pop up when I don't want it to and then I have to go to…
Brad Dwyer
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8 answers

How can I extract .rar files on the Mac?

Is there anything built-in that does this? (E.g. command line tools.) Or are there any third-party apps? Update: I like The Unarchiver, but vote up your favourite, or add it as an answer if it isn’t there.
Paul D. Waite
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10 answers

How do I find a file by filename in Mac OSX terminal?

I want to find a file on my Macbook with the filename: abc.dmg. I've tried to use spotlight, but it doesn't find it. When I tried find, and used: find -name abc.dmg -path /, I got errors back. What is the proper syntax to find a file by filename…
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5 answers

What's the equivalent of Linux's updatedb command for the Mac?

If I want to use the locate command on a Linux machine, I usually run sudo updatedb first to update the database. I can run the locate command on OS X 10.5 but I can't find updatedb. What's the corresponding updatedb for the mac?
Thierry Lam
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22 answers

Command-line application for converting SVG to PNG on Mac OS X

Are there any command-line programs that can convert an SVG to PNG that run on macOS?
Lorin Hochstein
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27 answers

What can I do to stop the Play / Pause button from opening iTunes?

In Snow Leopard the Play / Pause media button (on the F8 key) opens up iTunes. How can I disable that? Preferably keeping the old Leopard behaviour, so I can use it to control other media applications (e.g. Spotify).
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13 answers

Is there a fix for the "Too many open files in system" error on OS X 10.7.1?

I need to get rid of the pesky "Too many open files in system" limit on OS X 10.7.1.  Is there a way?
John Wilund
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4 answers

How can I install 7zip so I can run it from Terminal on OS X

I would like to be able to run 7zip from the command line on Mac. Does anyone have instructions on how to set this up?
Paul Sheldrake
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