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2136 votes
7 answers
1.6m views

Why am I getting an “invalid active developer path” when attempting to use Git after upgrading to macOS Monterey?

After upgrading to macOS Monterey, I tried to run git from Terminal but it kept giving me the following error: xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), ...
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  • 48.5k
789 votes
9 answers
802k views

List of all packages installed using Homebrew

Is it possible to and how do I get a list of all the packages installed on my Mac using Homebrew? I am not interested in packages installed outside of Homebrew.
user avatar
  • 9,633
734 votes
6 answers
653k views

How can I permanently add my SSH private key to Keychain so it is automatically available to ssh?

It seems that ssh-add -K ~/.ssh/id_rsa will load your key but will ask for the password each time you reboot. I am looking for a solution that would not require me to re-enter the key password ...
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  • 26.8k
630 votes
13 answers
522k views

How to find cause of high kernel_task cpu usage?

Occasionally my machine will have a kernel_task instance max out the CPU: This can last from minutes to sometimes hours. The machine is effectively unusable in this state. Restarting doesn't help; a ...
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  • 11k
598 votes
155 answers
337k views

Please share your hidden macOS features or tips and tricks

Do you know any hidden or little-known nice feature of macOS (née Mac OS X)? It doesn't matter what it is—maybe just a short terminal command or a keyboard shortcut. Share your experiences on ...
493 votes
13 answers
179k views

Remap "Home" and "End" to beginning and end of line

Most of my computing time is spent in Linux (with occasional time in Windows). On these platforms the Home and End keys universally jump to the beginning or end of the current line. I am gradually ...
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  • 6,343
471 votes
2 answers
243k views

What is the difference between `brew` and `brew cask`?

So, what is the difference between brew and brew cask? I know that homebrew is a package management software. But what kind of software can I get there? Is it open source software and commercial ...
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  • 4,949
465 votes
15 answers
531k views

Shortcut for toggling between different windows of same app?

I opened two Google Chrome windows (because I am using multiple Gmails) and when I do the Cmd ⌘ Tab ⇥ shortcut it just shows me other applications that I opened but does not show me the other Chrome ...
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  • 4,653
458 votes
11 answers
267k views

How to separate "mouse" and "trackpad" settings?

In System Preferences > Mouse there's a setting "Scroll direction: natural", which I don't like, so I unset. The problem is that this also unsets the setting for Trackpad, which I do like. How can ...
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  • 7,190
452 votes
14 answers
263k views

git auto-complete for *branches* at the command line?

On my Linux machine I have autocomplete for branches with Git. [Note we are talking about git branch completion, not bash completion (e.g. commands, files, etc). Thus NOT Lane's answer at all] For ...
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451 votes
8 answers
242k views

How do I disable Chrome's two-finger back/forward navigation?

In dev builds of Chrome, they've implemented, refined, and released two-finger swipes left/right in order to browse back/forward in the browser history. Unfortunately, you can accidentally trigger it ...
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420 votes
7 answers
429k views

Why does my dock keep moving back to my other monitor?

I have a larger, external monitor connected to my MacBook Pro and have arranged it such that the dock is in the external monitor (via System Preferences > Displays > Arrangement, by dragging the white ...
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  • 4,507
420 votes
7 answers
592k views

How can I create a symbolic link in Terminal?

What command is used to create a symbolic link/soft link?
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  • 4,209
404 votes
133 answers
243k views

Got any tips or tricks for Terminal in Mac OS X?

One tip or trick per answer. My favorite is open . Opens the folder you're currently browsing in Finder. You can also pass URLs, images, documents or else to open. If you specify a program name ...
376 votes
12 answers
307k views

How can I configure Mac Terminal to have color ls output?

How can I configure Mac Terminal to have color ls output? I am using MacOS 10.5
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375 votes
5 answers
299k views

What is the difference between .bash_profile and .bashrc?

To make an alias for the Terminal in OS X, you can either put the aliases in .bash_profile or .bashrc. What is the difference between the two and why would I choose to put aliases in one and not the ...
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  • 35.5k
369 votes
15 answers
515k views

mds and mds_stores constantly consuming cpu

mds and mds_stores are constant CPU consumers even when I think nothing should have changed on the hard drive. Activity Monitor: I have a circa 2009 Macbook Pro with lots of software installed over ...
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  • 3,855
369 votes
7 answers
268k views

How do I recompile Bash to avoid Shellshock (the remote exploit CVE-2014-6271 and CVE-2014-7169)?

Given that Bash 3.2 (the version shipped by OS X) is vulnerable to the remote execution exploit known as "Shell Shock" (CVE-2014-6271 and CVE-2014-7169) how do I rebuild Bash and secure my system ...
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  • 2,675
366 votes
13 answers
212k views

How can I trigger a Notification Center notification from an AppleScript or shell script?

I'd love to be able to take advantage of 10.8's Notification Center features in AppleScripts and shell scripts I write. Is there a built-in command or a third-party library I can use from either an ...
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366 votes
1 answer
120k views

How to prevent Mac from changing the order of Desktops/Spaces

You may have encountered a situation in which Mac changes the order of desktops based on some events like alerts on a program or a web page in browser. How could I disable this logical change? Note: I'...
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  • 3,868
364 votes
9 answers
108k views

Using Alt/Cmd + Right/Left Arrow in iTerm

Is it possible to move between words in iTerm using Alt + Right/Left Arrows ? Now if I press Alt+Left I will get '[D' and '[C' if I press Alt+Right.
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  • 4,597
363 votes
11 answers
164k views

iTerm - going one word backwards and forwards

Would it be possible to configure iTerm 2 to go backwards and forwards one word through the curent text in the command line using a keyboard shortcut?
user avatar
  • 8,608
359 votes
38 answers
221k views

What Window Management Options exist for OS X?

I'd like to do something with my windows on OS X, where something includes options like re-arranging, moving, re-sizing, remembering positions, cloning across Spaces, etc. What options exist? Rules ...
352 votes
4 answers
459k views

How do I stop the Adobe Creative Cloud app from auto-launching on login?

How do I stop the Adobe Creative Cloud app from auto-launching on login? I don't see any option of stopping this, and for some reason it's not in OS X's user login options.
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  • 4,579
330 votes
5 answers
119k views

How can I disable animation when switching desktops in Lion?

I would very much like to disable the sliding animation that occurs when switching desktops via ctrl+→/← or ctrl+[number] in Lion. This was previously accomplished in previous versions ...
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  • 3,301
322 votes
13 answers
518k 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 ...
user avatar
  • 3,519
317 votes
1 answer
405k views

How do I launch Finder from terminal or command line [duplicate]

I use command line a lot, like most programmers. I want to be able to launch Finder, Safari or any other application for that matter from command line e.g. finder . where it will start Finder ...
user avatar
  • 3,171
305 votes
5 answers
832k views

How can I list my open network ports with netstat?

I would like to list my open network ports in Terminal with built in commands. As what I know, netstat is the command to use. But I'm struggling to get any useful information out of it. How can I ...
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  • 5,343
304 votes
9 answers
906k views

How do I find my IP Address from the command line?

I know you can do ifconfig | grep inet, but that shows you several IPv4 addresses. How do I get the specific one for SSHing et al?
user avatar
  • 4,069
303 votes
17 answers
719k views

How to combine two images into one on a Mac?

Say I have two photos (or any images), for example with the following dimensions: +----------+ +----------+ | | | | | | | | |320 x 428 | and |...
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  • 6,233
299 votes
8 answers
650k views

How to change computer name so terminal displays it in Mac OS X Mountain Lion? [duplicate]

When I setup my computer I named it "Scott's MacBook Pro". And so when I go to System preferences->Sharing, it says Scott's MacBook Pro there as my computer name. However, opening up a terminal gives ...
user avatar
  • 5,165
289 votes
12 answers
463k views

Can I get the CPU temperature and fan speed from the command line in OS X?

Is there a command I can run from the command line in OS X to get the current CPU temperature and/or the fan speed(s)? To be more specific, I'd like to be able to get the same info available in the ...
user avatar
  • 3,138
286 votes
3 answers
186k views

Hotkey to show hidden files and folders in File Open dialog?

This question is very similar to Is it possible to always show hidden/dotfiles in Open/Save dialogs?. How to show hidden files and folders in finder? is also related. However, I don't want to always ...
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280 votes
7 answers
131k views

"File Open" dialog is missing sidebar items

I'm having the strangest issue since updating to OS X El Capitan. My "Open File" dialogs show the sidebar but all my main (and useful) locations are missing. Take a look at this screenshot. This ...
user avatar
  • 2,911
277 votes
3 answers
1.6m views

How to Retrieve the Wi-Fi Password of a Connected Network on a Mac

I need to find the password for a Wi-Fi network that I am already connected to. I'm using a MacBook Pro that's running OS X Lion. Any guidance is appreciated.
user avatar
  • 2,893
275 votes
7 answers
119k views

Applications Don't Show Up in Spotlight

Spotlight has stopped showing any results for my Applications. I've tried reindexing and removing the index so it rebuilds it. No change. I've tried adding Applications to the Privacy tab and removing ...
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  • 2,925
265 votes
4 answers
132k views

What are the practical differences between Bash and Zsh?

With the news that Catalina will default to Zsh instead of Bash, I'm finding lots of results telling me about the switch, and that it may cause problems with shell scripts, but I'm not familiar enough ...
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  • 4,792
259 votes
3 answers
177k views

What is the "rootless" feature in El Capitan, really?

I have just learned about the "Rootless" feature in El Capitan, and I am hearing things like "There is no root user", "Nothing can modify /System" and "The world will end because we can't get root". ...
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  • 8,269
258 votes
13 answers
491k views

Why doesn't .bashrc run automatically?

I put some alias commands in my .bashrc file, so that they might be loaded everytime I open a new Terminal window. Yet this doesn't happen. I have to select run script: in the Terminal>Preferences&...
user avatar
  • 3,923
256 votes
8 answers
737k views

How can I manually delete old backups to free space for Time Machine?

I use a Time Capsule for backup and now I want the drive to back up data from an extra Mac. But the drive is filled up with old backups from Mac 1. There simply is not enough space available for the ...
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252 votes
16 answers
265k views

What do I type to produce the command symbol (⌘) in Mac OS X?

What combination of keys do I press to produce the command symbol (⌘) on Mac OS X? (I copied the above symbol from http://en.wikipedia.org/wiki/Command_key.)
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247 votes
7 answers
136k views

Make the green full screen window icon on Yosemite maximize windows

On Mac OS X Yosemite the green icon in every window: is by default used to make the application full screen. How do I make it work the same way as in previous versions of Mac OS X, i.e. to maximize ...
user avatar
  • 8,608
244 votes
6 answers
176k views

How to replace Mac OS X utilities with GNU core utilities?

I found there is some differences between the utility command I used on the mac OSX and linux. I want to make my experience united. How could I replace all my mac utilities with GNU utilities?
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  • 2,605
231 votes
21 answers
312k views

Is there a Mac OS X Terminal version of the "free" command in Linux systems?

On Linux, I often use the free command to see the current amount of free and used memory in the system. For example: $ free total used free shared buffers cached ...
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  • 5,195
231 votes
12 answers
124k views

How can I save tabs in iTerm 2 so they restore the next time the app is run?

Can I save tabs on exit in my iTerm 2, so I don't have to open same directories again after restart? Like Chrome does, for example. I couldn't find such option in settings. Maybe "Arrangements" is ...
user avatar
  • 3,483
230 votes
5 answers
433k views

Can I open files in TextEdit from the Terminal in Mac OS X?

I frequently find that a Terminal command to open a file in TextEdit would be very handy. Does such a command exist on Mac OS X?
user avatar
  • 2,459
221 votes
11 answers
162k views

macOS Sierra doesn’t seem to remember SSH keys between reboots

I have to run this command since upgrading to macOS: ssh-add -K Corrects the problem after the reboot but I have to run this command every time I log on to my computer. If I do not run the command ...
user avatar
  • 2,395
221 votes
28 answers
434k 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?
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  • 2,751
218 votes
8 answers
1.4m views

How do I combine two or more images to get a single pdf file?

Say I have some image files (for instance, the result of scanning some sheets) and I want to combine them into a single pdf file, each image on a different page. Is there a faster / more convenient ...
user avatar
  • 2,950
217 votes
14 answers
429k 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 ...
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  • 2,379

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