OS X (formerly Mac OS X) is the marketing name for Apple's computer OS. Note the proper pronunciation is "ohh ess ten" and not "oh ess ex".

learn more… | top users | synonyms (3)

36
votes
3answers
44k views

How can I keep my Mac awake AND locked?

I want to leave my Mac awake overnight so it syncs 4GB of data from Dropbox. I need to prevent the machine from going to sleep because that pauses the Dropbox sync I've been using Caffeine to keep ...
36
votes
7answers
117k views

Is it safe to delete ~/Library/Caches?

Is it safe to delete the file Caches, in the Library of the Mac OS X Hard Drive? It's a pretty big file, 3.56 GB, Caches reminds me of logs i don't need or browser cookies. Is it safe to delete the ...
35
votes
2answers
49k views

How to enable OS X screen sharing (VNC) through SSH?

I forgot to turn on "VNC viewers may control screen with password", to enter on my working Mac, is there way to turn-on this feature remotely via SSH (I'm on WindowsXP now)?
35
votes
4answers
219k views

Official way to obtain an OS X ISO file

I'm trying to install OS X Mavericks in VirtualBox on Windows 8.1. I have VirtualBox installed and the VM set up, but I need an ISO file to install the operating system. I've searched around and ...
35
votes
3answers
23k views

How can I prevent an SSH session from hanging in OS X Terminal?

When I close my MacBook with an active SSH session in Terminal and then wake it up, the prompt goes unresponsive. In about five minutes it says Write failed: Broken pipe and terminates. This ...
35
votes
5answers
19k views

How can I modify the list of Applications under 'Open With…'?

I recently went to open an audio file, and wanted to open it in an editor instead of a player. I right-clicked it, hovered over 'Open With...' and was met with a very unsightly list. I have seen a ...
35
votes
1answer
15k views

Displaying combined file size of selected files in Finder

To find details about a files size, you can right click and select "Get Info": When I select a large number of files, and want to get information about all if them together as a single selection, ...
35
votes
4answers
53k views

How can I send a mail message later?

Back in the day, I remember having an e-mail program (perhaps it was Eudora?) that could schedule the sending of mail, so when composing a message, you could set some preference for when it would be ...
34
votes
7answers
26k views

Replace Text Edit as the default text editor

I've seen questions like this which don't quite solve my problem. I'd like to make Sublime Text 3 the default file viewer/editor for all files that currently use textedit. Most of these files can be ...
34
votes
4answers
17k views

Can I change the behavior of the Home and End keys on an Apple Keyboard with Numeric Keypad?

I just bought an "Apple Keyboard with Numeric Keypad", then I connected it to my Macbook Pro running Lion. But the home and end key under the F14 key doesn't work as I expected. Say in "Pages", the ...
34
votes
3answers
129k views

Where can I find the task manager in Mac OS X Lion?

Where can I find a task manager in Mac OS X Lion? I want to see the processes that are currently being run, and I can kill any process I like.
34
votes
7answers
30k views

Change the mouse wheel scrolling acceleration

I am new Mac user and I don't really like the Magic Mouse so I reverted to a good old 3 button mouse with a scroll wheel. When I turn the wheel slowly, it only scrolls pixel per pixel (or per two ...
33
votes
8answers
240k views

Alternative to Windows Snipping Tool for Mac OSX

Is there something like the Windows Snipping Tool for OSX? For those, who don't know about the tool, it's an easy to use software to take snapshot of any portion of screen, and is really useful in ...
33
votes
7answers
63k views

How can I find color codes on Mac?

I used to find color codes which I want to use for texts or background colors on htmls with color edit tool of MS paint which pre-installed on Windows. But now I use Mac instead of Windows. How can I ...
33
votes
8answers
115k views

How to remove an app stuck in “waiting” mode from the Mac App Store?

I've got 2 applications that I installed via the Mac App Store that are still in the "waiting" mode. How do I get these applications to finish installing? Or how do I remove them and try again? By ...
33
votes
9answers
23k views

How to use pip after the El Capitan Max OS X upgrade?

After the El Capitan update, I am unable to run pip install. The error I get is that the "operation is not permitted" when pip tries to create new folders while installing. creating ...
33
votes
4answers
6k views

How can I prevent iPhoto from opening everytime I plug my iPad/iPhone?

How can I prevent iPhoto/Photos/Image Capture from launching everytime I plug in my iPad/iPhone?
33
votes
7answers
27k views

What is wired memory?

I'm trying to figure out what is using all of the memory in my Macbook Pro running OS X Lion. I have 8 GB of memory total. When I quit all active programs except Finder and Activity Monitor, then run ...
33
votes
5answers
23k views

“powerd” process uses a lot of CPU

Oftentimes, after I wake my Mac from sleep, powerd (which is the power management daemon? Which in particular deals with sleeping the Mac and waking it?) uses high CPU, usually around 25% to 50% on my ...
33
votes
3answers
26k views

How do I disable this message: “the disk was not ejected properly”?

Is there any way to disable the "the disk was not ejected properly" message? I use a KVM and need to switch between two systems and have a memory stick that is in the KVM. The problem is that it's ...
32
votes
6answers
34k views

Move through images in a folder with Preview.app

When looking at an image in a directory with the Preview application, I'm used to the Windows behaviour of using the ←/→ keys to move through all the other viewable images in that ...
32
votes
5answers
9k views

What is this symbol? ⎋ (it is listed as menu shortcut)

The shortcut that is reported in the -menu, for Force Quit menu-item, is ⌥⌘⎋ (the last character is the Unicode broken circle with northwest arrow). What key should I press to invoke the Force Quit ...
32
votes
9answers
36k views

Paint.NET alternative for Mac OS X

I would be extremely grateful to anyone pointing me in the direction of the Mac OS X analogue for the free Windows image-editing software Paint.NET. Basically the way I use it is I take lots of ...
32
votes
7answers
13k views

Bluetooth Issues after Sleep in OS X Yosemite (10.10)

I seem to be having persistent issues with Bluetooth connectivity, especially after waking up my Macbook Pro from a long sleep. I have a speaker that automatically turns off after a certain period ...
32
votes
3answers
12k views

Text copied from Terminal with formatting in Mavericks (10.9), Yosemite (10.10), and El Capitan (10.11)

After the update to Mavericks (10.9), anything copied from Terminal is pasted in the target app with the same formatting as in Terminal, in my case, white monospaced letters on a black background, ...
32
votes
11answers
35k views

What's a good SSH tunneling client for OS X?

I've using SSH Tunnel manager to easily set up and stop port tunneling over SSH to various servers at my company. That saved me the pain of opening up a new terminal window which will hang out there ...
32
votes
2answers
60k views

Why Mac OS X don't source ~/.bashrc [duplicate]

I found a lot of people figuring out why instruction similar to this : Put X to your ~/.bashrc and you can do Y don't work. It always turns out that Mac OS X's bash's startup files (or Mac's ...
32
votes
3answers
26k views

Was the FileMerge application removed from OS X 10.7.3?

I just updated to 10.7.3 and can no longer find the FileMerge application, which is part of the Xcode developer tools package. Did apple remove this in 10.7.3? I've checked in my developer directory, ...
31
votes
7answers
33k views

How do I delete a single file from the Trash?

I'm trying to free up space on an external drive, and after deleting a bunch of stuff, it's still showing very little actual free space. I went to the trash can, but can't seem to delete the files ...
31
votes
4answers
29k views

Can I code using Swift on Mavericks?

Is is possible to code using Swift on OS X Mavericks? I found the manual on iBooks but that's as far as I can get right now.
31
votes
4answers
11k views

How do I silently start up my MacBook Air?

When I start up my MacBook Air, it makes a loud startup sound unless I muted the computer prior to shutting down last time. However, I cannot guarantee that I had muted the computer last time before ...
31
votes
3answers
19k views

What are the differences between journaling HFS+ and non-journaling HFS+?

I'm about to format an external hard disk drive (HDD). What are the key differences between journaling HFS+ and non-journaling HFS+? Apart from the fact that one has journaling and the other does ...
31
votes
4answers
22k views

Quick Look support for non-native video files (.avi, .mkv) on Mavericks

In the past, we've been able to get codecs for DivX/XviD/MPEG4 and support for containers like AVI, MKV in Mac OS X's Quick Look feature using Perian (as per this question). As noted on the Perian ...
31
votes
3answers
10k views

Yosemite auto creates multiple desktops (spaces) on main monitor

Since upgrading to Yosemite I've been having issue with OS X creating additional desktops on my main monitor for no apparent reason. I usually have 3 different desktops setup on my main monitor and ...
30
votes
4answers
52k views

How do I disable System Integrity Protection (SIP) AKA “rootless” on OS X 10.11, El Capitan?

Apple has introduced System Integrity Protection, also known as "rootless", with OS X 10.11, El Capitan. I understand this is a step for general protection against malware but as a developer I need ...
30
votes
8answers
20k views

Can home and end keys be mapped when using Terminal?

The home and end keys on a MacBook Pro can be emulated with fn + left arrow or fn + right arrow. Or when certain settings are changed, with the Command (Apple) key instead of fn. None of these ...
30
votes
3answers
163k views

Using The Terminal Command to Shutdown, Restart and Sleep My Mac?

I'm getting more interested in using Terminal as an alternative way to address solutions on my Mac. I have seen this question entitled "Is there a better way to shutdown/restart OSX?". I would ...
30
votes
6answers
24k views

Return vs. Enter?

I noticed that my MacBook's keyboard has the word enter above the return key. I also noticed that on Mac OS X, there's a special symbol for return ↩, and another for enter ⌤. How would I send the ...
30
votes
2answers
91k views

List all devices connected, lsblk for Mac OS X

In Linux if I want to see all the devices currently connected to my computer in the command-line, I run: lsblk or blkid What's the equivalent command under Mac OS X? NOTE The goal here is ...
30
votes
5answers
32k views

Can't plot with gnuplot on my Mac

I am trying to plot with gnuplot on my Mac (OS X 10.8.5). I have installed X11 and XQuartz 2.7.4 and after that I installed gnuplot, but unfortunately gnuplot couldn't plot. Simple plots like the ...
30
votes
3answers
17k views

How do I hide the Spotlight icon on Yosemite, but keep the Spotlight functionality?

I use Spotlight in OS X, and I have long disliked its attachment to the menu bar. Now, in Yosemite, Spotlight shows up as an overlay in the middle of the screen when summoned, much like other ...
30
votes
4answers
19k views

How to set to open folder with enter in finder?

I want to set to open a folder in finder with Enter. I know it's possible to open a folder with ⌘ Command + ↓ Down Arrow but I don't like it and I never use it because it's easier to use the ...
30
votes
9answers
119k views

What's a good XML viewer/editor for Mac OS X?

I use XML Editor from XMLmind for editing/viewing XML file in Mac. It's not bad, but I expect an XML editor for Mac. What options do I have including the commercial/free software?
29
votes
30answers
22k views

What OS X tweaks, hacks, or modifications couldn't you live without?

What OS X tweaks or customization applications do you find indispensable? Please search before posting in order to avoid duplicate entries. You can search within this question with inquestion:this ...
29
votes
8answers
147k views

Is there a GUI SSH client for OS X?

I know that SSH from the command line is easy enough, but would like to give my students that use OS X a GUI option. Is there a PuTTY equivalent for the Mac?
29
votes
5answers
50k views

Changing Creation Date of a file

Could you please let me know how I can change the creation date of a file in Lion. I realise there is the touch-t command but that does not work in Lion. A couple of people have mentioned another ...
29
votes
15answers
19k views

Lock Screen Command One-Liner

I'm trying to find out whether there is any kind of equivalent command line one-liner which replicates the exact identical functionality of the 'Lock Screen' menu option available via the Keychain app ...
29
votes
9answers
21k views

How can I stop my whole screen from flashing white on errors?

Whenever I access Terminal and press Command ⌘ + Delete ⌫ my screen flashes white. It also happens when Chrome's Command ⌘ + F returns no results. Have I somehow messed up my settings? I already ...
29
votes
2answers
14k views

Can I fix things so Archive Utility doesn't hang on all zip files?

I am using Mac OS X 10.8.2. I don't know exactly when it started (might have been after the upgrade to 10.8.2, but not sure), but now, any zip file I try to open starts up 'Archive Utility', but then ...
29
votes
5answers
32k views

How do I downgrade node or install a specific previous version using homebrew?

I'm using brew. I have node installed, using brew. I want to use an earlier version of node. Online, I find instructions such as, for example: cd /usr/local/Library/Formula brew remove node --force ...