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". it is be replaced by macOS to match its the format of watchOS, tvOS, and ios.

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3answers
59k 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 ...
44
votes
7answers
27k views

Can I reset Notification Centre badge counter for Messages?

The new Messages beta app (based on iChat) is stuck with one incoming message. Can I somehow reset the badge?
44
votes
3answers
29k 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 ...
44
votes
2answers
38k views

truecrypt 7.1a requires Mac OS X 10.4 or later on Yosemite 10.10

After reading articles about the state of Truecrypt in February 2015, I decided to download the last stable version of Truecrypt that allows full usage of Truecrypt: that is, version 7.1a 7.2 ...
44
votes
4answers
259k 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 ...
43
votes
3answers
207k 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 ...
43
votes
14answers
95k views

What's a good Windows RDP client for Mac?

I administer a number of Windows machines, and am trying to find a really good application to remote desktop in to them from my Mac. I've tried CoRD, and I really like its library approach to saved ...
43
votes
3answers
150k 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.
43
votes
5answers
12k views

How do I remove duplicate “Open With” context menu items in Finder.app?

For whatever reason, the "Open With" context menu in Finder is always listing every app four times (exactly). I've read about (and tried) rebuilding the Launch Services database to restore the ...
43
votes
6answers
25k views

Can I copy by highlighting and paste by middle click on Mac OS X?

I was using Linux for the last couple of years and I find it extremely useful to copy text by highlighting it as well as to paste by clicking a middle mouse button. I'm using a Mac now and I wonder ...
42
votes
8answers
140k 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 "...
42
votes
7answers
43k 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 ...
42
votes
11answers
3k views

Is it generally advisable to get anti-virus software for Mac OS X?

Is it worth to buy an anti-virus software for Mac OS X? I heard both opinions like "it's not possible to get a virus on Mac OS X" and "Mac OS X is also vulnerable against virus... " Which is true? ...
42
votes
1answer
18k 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, ...
42
votes
3answers
25k views

What's the difference between Real, Virtual, Shared, and Private Memory?

The different columns in Activity Monitor are a little confusing
41
votes
13answers
46k views

Why would I disable swap file in Mac OS X?

I came across a thread about installing an SSD drive in MacBook Pro. Someone in the comments also recommended to disable the swap file but didn't say why: sudo launchctl unload -w /System/Library/...
41
votes
8answers
269k 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 ...
41
votes
5answers
11k 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 ...
40
votes
2answers
114k 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 ...
40
votes
5answers
135k views

Shortcut key for fullscreen mode

I am new to Mac OS (2014 Macbook Air). I am looking at the arrow on top right corner of windows, when I click it, it maximizes window over the top menu and in order to switch back I need to hold mouse ...
40
votes
3answers
33k views

Change Dock color on left/right site in OS X 10.9 Mavericks

New in OS X Mavericks, when using the famous dock on the left or right site: It has a white background now. It makes it hard to see the icons and the design is awful. Does anyone know how to change ...
39
votes
2answers
56k 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)?
39
votes
11answers
85k views

How to create a text file in a folder

In windows I right click and then there is an option to create a text file. How to do so in mac?
39
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10answers
84k views

How do you force a 5 GHz wifi connection?

Wifi networks are often set up in dual-band mode, with the same SSID served on both 2.4 GHz and 5 GHz bands. I'd like to always use the 5 GHz band (due to interference with Bluetooth and other devices ...
38
votes
4answers
4k views

What's the dot in the centre of the red window close button for?

When I'm working with certain applications / windows in Mac OS X (I'm using 10.8, although I'm not sure that's relevant), I sometimes see a black dot in the centre of the red window close button. What ...
38
votes
4answers
18k 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 ...
37
votes
17answers
23k views

How do I move a window whose title bar is off-screen?

I encountered a strange problem today. I downloaded FileZilla and on first launch the title bar was above my mouse pointer's reach. Making the window unmovable. Here is a screenshot of my situation. ...
37
votes
11answers
46k 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 ...
37
votes
6answers
21k 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 ...
37
votes
7answers
32k 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 ...
37
votes
3answers
43k views

what are the split terminal commands

I stumbled across the command-d hot key which splits the terminal into 2 panes. But I cant find documentation anywhere on how to close the new pane or even switch the focus to it so I can use it. ...
36
votes
9answers
47k 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 ...
36
votes
10answers
180k 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?
36
votes
4answers
13k 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, e.g....
36
votes
1answer
6k views

Set the default search to current folder?

The Finder's search bar is an integral part of my workflow. I am constantly using it to search the contents of files within various folders. However, typing into this bar always searches the entire ...
36
votes
4answers
57k 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 ...
36
votes
7answers
34k 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 ...
36
votes
3answers
28k 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 ...
36
votes
6answers
90k views

Copy and paste stops working

For several months now i've had an issue where after using my laptop for a couple of weeks without restarting, i'll slowly lose my ability to copy and paste. First it's only between different apps ...
35
votes
3answers
11k views

Enter a filename in the File Open dialog

Can I enter a path to a file and its name instead of selecting a file in Mac OS X file dialog? I tried just typing into an open dialog but it will just try to "Go to a folder", it won't accept a full ...
35
votes
5answers
15k views

On OS X, what files are excluded by rule from a Time Machine backup?

In addition to whatever files I may choose to exclude, what files does the system exclude by rule or classification? It might make sense not to backup Trash or Caches, but I'm looking for a way to ...
35
votes
7answers
18k 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 ...
35
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?
35
votes
1answer
67k views

Where are the default (system) wallpaper folders located on OS X? [duplicate]

Possible Duplicate: Where are Apple's default desktop images stored? Does anybody know where the folders containing the default (i.e. system) wallpapers are located on OS X Lion? (it may ...
35
votes
3answers
39k views

How can I make all folders in Finder “snap to grid”?

I don't like how in Finder, you can drag a folder and drop it anywhere, even overlapping on another folder. For example: That is just annoying. And when I resize the window, the files stay how they ...
34
votes
10answers
62k views

Can't get rid of incomplete download bar underneath dock icon

My Downloads folder in my dock has been showing a download/progress bar at 50% since yesterday. There aren't any half-complete files in my Download folder, Google Chrome isn't awaiting any action to ...
34
votes
4answers
35k views

How can I change the language for automatic spelling correction?

I set my input source to be US English. And the flag showing on the taskbar is also an American flag. But whenever I type something in Mail.app or Notes.app the spell check still corrects my spelling ...
34
votes
4answers
89k views

Getting files, all at once, from a web page using curl

I would like to download the files, all at once, from the following page using curl: http://www.ime.usp.br/~coelho/mac0122-2013/ep2/esqueleto/ I tried curl http://www.ime.usp.br/~coelho/mac0122-2013/...
34
votes
6answers
78k views

Where can I find the installed package path via brew

I installed some packages via brew. But I can not find where they are. I can not get access by typing hping on terminal % brew install hping (git)-[master] Warning: hping-3.20051105 already ...
34
votes
7answers
38k 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 ...