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Questions tagged [macos]

macOS (formerly known as OS X or Mac OS X) is the desktop operating system from Apple, found on Macintosh computers. Use this tag only if your question relates to using macOS APIs or macOS-specific behavior, not because you happen to run your code on macOS. Questions relating to using or troubleshooting macOS are off-topic and belong in the Ask Different community instead.

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3482 votes
41 answers
1.5m views

Git is not working after macOS update ("xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools")

I updated to the latest OS, and/or restarted my computer (this happens on every major update, but this time all I did was restart my computer on 2022-09-13). This morning I navigated to my work's ...
dustbuster's user avatar
  • 81.7k
3035 votes
40 answers
4.4m views

Find (and kill) process locking port 3000 on Mac [closed]

How do I find (and kill) processes that listen to/use my TCP ports? I'm on macOS. Sometimes, after a crash or some bug, my Rails app is locking port 3000. I can't find it using ps -ef... When running ...
oma's user avatar
  • 40k
2139 votes
19 answers
1.8m views

Who is listening on a given TCP port on Mac OS X?

On Linux, I can use netstat -pntl | grep $PORT or fuser -n tcp $PORT to find out which process (PID) is listening on the specified TCP port. How do I get the same information on Mac OS X?
pts's user avatar
  • 85.6k
1779 votes
32 answers
1.1m views

How can I Remove .DS_Store files from a Git repository?

How can I remove those annoying Mac OS X .DS_Store files from a Git repository?
John Topley's user avatar
1671 votes
21 answers
3.0m views

How do I install pip on macOS or OS X?

I spent most of the day yesterday searching for a clear answer for installing pip (package manager for Python). I can't find a good solution. How do I install it?
The System's user avatar
  • 16.8k
1408 votes
39 answers
514k views

How can I check for an active Internet connection on iOS or macOS?

I would like to check to see if I have an Internet connection on iOS using the Cocoa Touch libraries or on macOS using the Cocoa libraries. I came up with a way to do this using an NSURL. The way I ...
Brock Woolf's user avatar
  • 47.1k
1375 votes
38 answers
1.7m views

How to set or change the default Java (JDK) version on macOS?

How can you change the default version of Java on a mac?
Venkat's user avatar
  • 13.9k
1323 votes
82 answers
1.0m views

Xcode - How to fix 'NSUnknownKeyException', Reason: "… this class is not key value coding-compliant for the key X" error?

I'm trying to link a UILabel with an IBOutlet created in my class. My application is crashing with the following error" *** Terminating app due to uncaught exception 'NSUnknownKeyException', ...
1305 votes
31 answers
824k views

Pipe to/from the clipboard in a Bash script

Is it possible to pipe to/from the clipboard in Bash? Whether it is piping to/from a device handle or using an auxiliary application, I can't find anything. For example, if /dev/clip was a device ...
moinudin's user avatar
  • 137k
1296 votes
37 answers
1.3m views

"code ." is not working in on the command line for Visual Studio Code on OS X/Mac

The command code . doesn't work in this manual. All the other steps before that worked. How can I call the Visual Studio Code in an OS X terminal? pwd /Users/mona/nodejs/myExpressApp code . -bash: ...
Mona Jalal's user avatar
1290 votes
34 answers
1.4m views

How to install Java 8 on Mac

Editors note: This question was asked in 2014, and the answers may be outdated. I want to do some programming with the latest JavaFX, which requires Java 8. I'm using IntelliJ 13 CE and Mac OS X 9 ...
user3763100's user avatar
  • 13.2k
1186 votes
38 answers
1.3m views

How can I start PostgreSQL server on Mac OS X?

Final update: I had forgotten to run the initdb command. By running this command ps auxwww | grep postgres I see that postgres is not running > ps auxwww | grep postgres remcat 1789 0....
1042 votes
32 answers
1.2m views

Upgrade Node.js to the latest version on Mac OS

Currently I am using Node.js v0.6.16 on Mac OS X 10.7.4. Now I want to upgrade it to the latest Node.js v0.8.1. But after downloading and installing the latest package file from nodejs.org, I found ...
afterglowlee's user avatar
  • 12.2k
1030 votes
30 answers
663k views

xcode-select active developer directory error

Saw the following error when running an npm install which required node-gyp... but could be triggered by anything which requires xcode-select. xcode-select: error: tool 'xcodebuild' requires Xcode, ...
tjmehta's user avatar
  • 30.2k
994 votes
35 answers
1.5m views

How do I update the password for Git?

I'm using BitBucket with Xcode and Git for version control, and recently I changed all of my passwords (thanks Adobe!). Unsurprisingly, I'm no longer able to push my local commits to my repository on ...
Ken M. Haggerty's user avatar
962 votes
21 answers
344k views

Git ignore file for Xcode projects

Which files should I include in .gitignore when using Git in conjunction with Xcode?
Hagelin's user avatar
  • 16.6k
940 votes
33 answers
892k views

Setting environment variables on OS X

What is the proper way to modify environment variables like PATH in OS X? I've looked on Google a little bit and found three different files to edit: /etc/paths ~/.profile ~/.tcshrc I don't ...
Paul Wicks's user avatar
  • 64.8k
928 votes
21 answers
468k views

How to move the cursor word by word in the OS X Terminal

I know the combination Ctrl+A to jump to the beginning of the current command, and Ctrl+E to jump to the end. But is there any way to jump word by word, like Alt+←/→ in Cocoa applications ...
user avatar
902 votes
12 answers
507k views

.gitignore all the .DS_Store files in every folder and subfolder

I've added .DS_Store to the .gitignore file, but it seems that it is only ignoring .DS_Store in the root directory, not in every folder and subfolder. How do I fix this?
vickyqiu's user avatar
  • 9,049
882 votes
33 answers
814k views

Set up adb on Mac OS X

I spent quite sometime figuring how to set up adb on Mac, so I figure writing how to set it up might be useful to some people. adb is the command line tool to install and run android apps on your ...
changey's user avatar
  • 19.4k
881 votes
21 answers
1.1m views

Where is Java Installed on Mac OS X?

I downloaded Java 7u17 on Mac OS 10.7.5 from here and successfully installed it. To do some JNI programming, I need to know where Java is installed on my Mac. I thought that inside the /Library/Java/...
Thunderforge's user avatar
  • 20.3k
865 votes
10 answers
1.0m views

Please enter a commit message to explain why this merge is necessary, especially if it merges an updated upstream into a topic branch

I am using Git. I did a pull from a remote repo and got an error message: Please enter a commit message to explain why this merge is necessary, especially if it merges an updated upstream into a ...
bernie2436's user avatar
  • 23.5k
852 votes
34 answers
297k views

nvm keeps "forgetting" node in new terminal session

Upon using a new terminal session in OS X, nvm forgets the node version and defaults to nothing: $ nvm ls: .nvm v0.11.12 v0.11.13 I have to keep hitting nvm use v.0.11.13 in ...
frhd's user avatar
  • 9,964
822 votes
30 answers
624k views

Run / Open VSCode from Mac Terminal

I'd like to run / open Visual Studio Code from the Mac OSX Terminal by running this command code .. I found instructions here: https://code.visualstudio.com/Docs/setup Apparently I need to include ...
Johnny Oshika's user avatar
802 votes
32 answers
712k views

How to fix homebrew permissions?

I have uninstalled and installed Homebrew 3 times now because it seems to never allow me to install anything as it denies me permissions at the end of most installations. As an example I will post ...
Paul Rada's user avatar
  • 19.4k
751 votes
36 answers
810k views

psql: FATAL: role "postgres" does not exist

I'm a postgres novice. I installed the postgres.app for mac. I was playing around with the psql commands and I accidentally dropped the postgres database. I don't know what was in it. I'm ...
user805981's user avatar
  • 10.7k
697 votes
16 answers
367k views

How can I clear previous output in Terminal in Mac OS X?

I know the clear command that 'clears' the current screen, but it does this just by printing lots of newlines - the cleared contents just get scrolled up. Is there a way to completely wipe all ...
eonil's user avatar
  • 85.2k
690 votes
47 answers
477k views

dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.62.dylib error running php after installing node with brew on Mac

I installed node using homebrew (Mojave), afterwards php stoped working and if I try to run php -v I get this error: php -v dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.62.dylib ...
petekaner's user avatar
  • 8,621
682 votes
14 answers
667k views

Open terminal here in Mac OS finder [closed]

Is there something similar to the "Open Command Window Here" Windows Powertoy for Mac OS? I've found a couple plugins through a google search but wanted to see what works best for developers out there....
Abdullah Jibaly's user avatar
680 votes
7 answers
446k views

How to completely uninstall Android Studio on Mac?

I recently downloaded Android Studio on my Macbook Pro and I messed up with it every time I open it. It gives me plugin errors and several other errors. I need to uninstall it completely from my mac. ...
Mostafa Addam's user avatar
656 votes
39 answers
2.2m views

bash: pip: command not found

I downloaded pip and ran python setup.py install and everything worked just fine. The very next step in the tutorial is to run pip install <lib you want> but before it even tries to find ...
Trindaz's user avatar
  • 17.6k
654 votes
10 answers
755k views

OS X: equivalent of Linux's wget

How can I do an HTTP GET from a Un*x shell script on a stock OS X system? (installing third-party software is not an option, for this has to run on a lot of different systems which I don't have ...
SyntaxT3rr0r's user avatar
  • 28.1k
649 votes
5 answers
1.1m views

Installing ADB on macOS [duplicate]

I had issues finding a good solid tutorial on how to setup ADB for Mac. How can I add ADB to macOS in such a way that it can be used in the terminal? UPDATE For those reading this post. Yes, as ...
wesley franks's user avatar
646 votes
66 answers
607k views

Postgres could not connect to server

After I did brew update and brew upgrade, my postgres got some problem. I tried to uninstall postgres and install it again, but it didn't work as well. This is the error message. (I also got this ...
Gary Lai's user avatar
  • 6,623
645 votes
26 answers
1.1m views

Maven Install on Mac OS X

I'm trying to install maven through the terminal by following these instructions. So far I got this: export M2_HOME=/user/apple/apache-maven-3.0.3 export M2=$M2_HOME/bin export PATH=$M2:$PATH export ...
Edgardo Roldan's user avatar
642 votes
32 answers
607k views

How to install a gem or update RubyGems if it fails with a permissions error

I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system, and it fails with this error: ERROR: While executing gem ... (Gem::FilePermissionError) You don't ...
Gaurav Taywade's user avatar
629 votes
19 answers
111k views

Do Swift-based applications work on OS X 10.9/iOS 7 and lower?

Will Swift-based applications work on OS X 10.9 (Mavericks)/iOS 7 and lower? For example, I have a machine running OS X 10.8 (Mountain Lion), and I am wondering if an application I write in Swift will ...
MeIr's user avatar
  • 7,276
612 votes
6 answers
1.2m views

How to run a shell script on a Unix console or Mac terminal?

I know it, forget it and relearn it again. Time to write it down.
P-A's user avatar
  • 11.1k
591 votes
27 answers
570k views

Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?

Java is an optional package on the latest versions of macOS. Yet once installed it appears like the JAVA_HOME environment variable is not set properly.
Olivier Refalo's user avatar
584 votes
14 answers
213k views

How to set keyboard shortcuts to jump to beginning/end of line? [closed]

I can see that Ctrl+left/right jumps to the beginning/end of line. How to change this to Cmd+left/right arrow?
chris's user avatar
  • 7,413
575 votes
33 answers
446k views

Open Sublime Text from Terminal in macOS

In Terminal when I use .subl It returns -bash: .subl: command not found Anyone know how to open Sublime Text 3 from the command line in macOS?
user1405049's user avatar
  • 5,751
575 votes
34 answers
559k views

How to open Visual Studio Code from the command line on OSX?

The docs mention an executable called code, but I'm not sure where I can find that so I can put it on my path. The zip I downloaded from the VSCode site did not include any such executable. (I am able ...
Nick Heiner's user avatar
573 votes
16 answers
268k views

Command Line Tools not working - OS X El Capitan, Sierra, High Sierra, Mojave

I just upgraded from Yosemite to El Capitan (and replicated the problem upgrading from El Capitan to Sierra), and when I try to type for example git status inside a terminal, I get the following error:...
rista404's user avatar
  • 7,739
564 votes
13 answers
606k views

Uninstall / remove a Homebrew package including all its dependencies

I have a Homebrew formula that I wish to uninstall/remove along with all its dependencies, skipping packages whom other packages depend upon (a.k.a. Cascading package removal in Package manager ...
Ory Band's user avatar
  • 15.3k
562 votes
39 answers
678k views

Cannot connect to the Docker daemon on macOS

I normally prefer to manage my apps on my OSX with brew I am able to install docker, docker-compose and docker-machine docker --version Docker version 17.05.0-ce, build 89658be docker-compose --...
Anthony Kong's user avatar
  • 39.8k
556 votes
16 answers
798k views

How to install Xcode Command Line Tools

How do I get the command-line build tools installed with the current Xcode/Mac OS X v10.8 (Mountain Lion) or later? Unlike Xcode there is no installer, it's just a bundle. It looks like all the ...
Scott Wisniewski's user avatar
550 votes
29 answers
490k views

Mongod complains that there is no /data/db folder

I am using my new mac for the first time today. I am following the get started guide on the mongodb.org up until the step where one creates the /data/db directory. btw, I used the homebrew route. So ...
Nik So's user avatar
  • 16.8k
545 votes
16 answers
902k views

Set environment variables on Mac OS X Lion

When someone says "edit your .plist file" or "your .profile" or ".bash_profile" etc, this just confuses me. I have no idea where these files are, how to create them if I have to do that, etc, and also ...
Anders's user avatar
  • 12.7k
540 votes
7 answers
508k views

OS X Terminal Colors [closed]

I just got a Mac after working with Ubuntu Linux for some time. Among the many things I'm trying to figure out is the absence of colors in my terminal window- like the ones that are shown (on Linux) ...
sa125's user avatar
  • 28.7k
529 votes
7 answers
215k views

Is it okay to delete the macOS Xcode CoreSimulator devices folder?

My ~/Library/Developer/CoreSimulator/Devices folder is 26 GB. Is it safe to just delete all the content? Will those files be automatically regenerated?
Franck's user avatar
  • 9,139

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