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.
macos
14,819
questions
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', ...
2
votes
2
answers
2k
views
Why is my PyGame application not running at all?
I have a simple Pygame program:
#!/usr/bin/env python
import pygame
from pygame.locals import *
pygame.init()
win = pygame.display.set_mode((400,400))
pygame.display.set_caption("My first game&...
- 39
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 ...
- 47.1k
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 ...
- 64.8k
452
votes
17
answers
1.1m
views
How to uninstall Python 2.7 on a Mac OS X 10.6.4?
I want to completely remove Python 2.7 from my Mac OS X 10.6.4. I managed to remove the entry from the PATH variable by reverting my .bash_profile. But I also want to remove all directories, files, ...
- 20k
238
votes
16
answers
143k
views
Finding current executable's path without /proc/self/exe
It seems to me that Linux has it easy with /proc/self/exe. But I'd like to know if there is a convenient way to find the current application's directory in C/C++ with cross-platform interfaces. I've ...
- 2,601
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. ...
- 7,216
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 ...
- 24.8k
41
votes
6
answers
64k
views
Paramiko "Unknown Server"
I'm trying to get started with the Paramiko library, but the library is throwing an exception as soon as I try to connect with the following simple program:
import paramiko
ssh = paramiko.SSHClient()
...
- 6,218
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?
- 16.8k
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?
- 13.9k
262
votes
20
answers
162k
views
Getting the difference between two Dates (months/days/hours/minutes/seconds) in Swift
I am trying to get the difference between the current date as NSDate() and a date from a PHP time(); call for example: NSDate(timeIntervalSinceReferenceDate: 1417147270). How do I go about getting the ...
- 3,160
257
votes
26
answers
394k
views
Force DOM redraw/refresh on Chrome/Mac
Every once in a while, Chrome will render perfectly valid HTML/CSS incorrectly or not at all. Digging in through the DOM inspector is often enough to get it to realize the error of its ways and ...
- 6,001
93
votes
11
answers
220k
views
Update OpenSSL on OS X with Homebrew
I'm using MacOS X 10.7.5 and I need a newer OpenSSL version due to handshake failures. There are several tutorials on the internet and I tried the following:
brew install openssl
brew link openssl --...
- 3,270
18
votes
2
answers
8k
views
strptime, as.POSIXct and as.Date return unexpected NA
When I try to parse a timestamp in the following format: "Thu Nov 8 15:41:45 2012", only NA is returned.
I am using Mac OS X, R 2.15.2 and Rstudio 0.97.237. The language of my OS is Dutch: I presume ...
- 183
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?
- 16.6k
174
votes
15
answers
203k
views
Homebrew refusing to link OpenSSL
I'm on: OSX 10.11.6, Homebrew version 0.9.9m OpenSSL 0.9.8zg 14 July 2015
I'm trying to play with with dotnetcore and by following their instructions,
I've upgraded/installed the latest version of ...
- 2,513
455
votes
15
answers
367k
views
sed command with -i option failing on Mac, but works on Linux
I've successfully used the following sed command to search/replace text in Linux:
sed -i 's/old_link/new_link/g' *
However, when I try it on my Mac OS X, I get:
"command c expects \ followed by ...
- 180k
344
votes
14
answers
119k
views
sed in-place flag that works both on Mac (BSD) and Linux [closed]
Is there an invocation of sed todo in-place editing without backups that works both on Linux and Mac? While the BSD sed shipped with OS X seems to need sed -i '' …, the GNU sed Linux distributions ...
- 6,071
495
votes
21
answers
915k
views
How to set Python's default version to 3.x on OS X? [duplicate]
I'm running Mountain Lion and the basic default Python version is 2.7. I downloaded Python 3.3 and want to set it as default.
Currently:
$ python
version 2.7.5
$ python3.3
version 3.3
How ...
- 9,302
467
votes
42
answers
554k
views
How to run CocoaPods on Apple Silicon (M1)
I have a Flutter project that I'm trying to run on iOS. It runs normally on my Intel-based Mac, but on my new Apple Silicon-based M1 Mac it fails to install pods.
LoadError - dlsym(0x7f8926035eb0, ...
- 12.3k
189
votes
17
answers
146k
views
Open document with default OS application in Python, both in Windows and Mac OS
I need to be able to open a document using its default application in Windows and Mac OS. Basically, I want to do the same thing that happens when you double-click on the document icon in Explorer or ...
- 54.1k
19
votes
3
answers
19k
views
Android update 17 seems incompatible with external Jars
I just allowed my Mac to do an update on its Java installation and now some of my old jars (like javax.mail and apache.commons.httpclient) are throwing "class not found" exceptions at run time!
...
- 28.2k
107
votes
11
answers
52k
views
Ruby Gem install Json fails on Mavericks and Xcode 5.1 - unknown argument: '-multiply_definedsuppress'
I was trying run gem install json and got the following error
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/...
- 1,263
192
votes
16
answers
140k
views
Can't compile C program on a Mac after upgrade to Mojave
I have used the gcc command on the terminal to compile C programs but all of a sudden, after an update to my Mac's OS (to macOS 10.14 Mojave, and XCode 10.0), I started receiving the message:
test.c:...
- 3,748
211
votes
12
answers
136k
views
Execute a terminal command from a Cocoa app
How can I execute a terminal command (like grep) from my Objective-C Cocoa application?
- 70.8k
72
votes
9
answers
233k
views
How to install latest version of openssl Mac OS X El Capitan
I have used brew install openssl to download and install openssl v1.0.2f, however, it comes back saying:
A CA file has been bootstrapped using certificates from the system
keychain. To add additional ...
- 8,176
36
votes
10
answers
27k
views
Problems getting pygame to show anything but a blank screen on Macos
I recently bought a new macbook and I've been trying endlessly to get pygame to work, but haven't succeeded yet. I'm getting pretty desperate and I could really use some help.
I've installed pygame ...
- 399
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 ...
- 81.7k
224
votes
22
answers
974k
views
How to change default Python version?
I have installed Python 3.2 on my Mac. After I run /Applications/Python 3.2/Update Shell Profile.command, it's confusing that when I type python -V in Terminal, it says Python 2.6.1 which is not what ...
- 3,752
7
votes
1
answer
4k
views
Mach-O 64-bit format does not support 32-bit absolute addresses. NASM Accessing Array
Running this code off my Mac computer, using command:
nasm -f macho64 -o max.a maximum.asm
This is the code I am attempting to run on my computer that finds the largest number inside an array.
...
- 173
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 ...
- 12.7k
23
votes
2
answers
29k
views
sed not giving me correct substitute operation for newline with Mac - differences between GNU sed and BSD / OSX sed [duplicate]
I'm using this reference : sed help: matching and replacing a literal "\n" (not the newline)
and I have a file "test1.txt" that contains a string hello\ngoodbye
I use this command to ...
- 3,887
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, ...
- 30.2k
288
votes
30
answers
628k
views
certificate verify failed: unable to get local issuer certificate
I am trying to get data from the web using python. I imported urllib.request package for it but while executing, I get error:
certificate verify failed: unable to get local issuer certificate (_ssl.c:...
- 3,177
3
votes
1
answer
5k
views
WebDriverException: 'geckodriver' executable needs to be in PATH even though it is
Trying to get firefox to run using selenium in spyder. My current code is
from selenium import webdriver
import os
os.environ["PATH"] += ":/usr/local/bin/geckodriver"
browser = webdriver.Firefox()
...
317
votes
4
answers
95k
views
Core Data vs SQLite 3 [closed]
I am already quite familiar with relational databases and have used SQLite (and other databases) in the past. However, Core Data has a certain allure, so I am considering spending some time to learn ...
- 5,418
130
votes
6
answers
191k
views
Getting "Permission Denied" when running pip as root on my Mac
I've started to use my Mac to install Python packages in the same way I do with my Windows PC at work; however on my Mac I've come across frequent permission denied errors while writing to log files ...
- 12.8k
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 $PORT to find out which process (PID) is listening on the specified TCP port. How do I get the same information on Mac OS X?
- 85.6k
25
votes
1
answer
61k
views
How to restore .bash_profile on a mac? None of my unix terminal are working [closed]
I added something to my bash_profile while trying to add Playframework to my path and something got messed up badly.
I added the following line to my .bash_profile
export PATH=$PATH:the path to my ...
- 1,140
209
votes
11
answers
276k
views
Environment variables in Mac OS X
Update: The link below does not have a complete answer. Having to set the path or variable in two places (one for GUI and one for shell) is lame.
Not Duplicate of: Setting environment variables in OS ...
- 54.1k
4
votes
3
answers
8k
views
JAR Bundler using OSXAdapter causing application to lag or terminate
I've created a simple Java application that each second for for 10 seconds consecutive seconds adds a new row to a JTable. It consists of three classes.
The main class that gets called once the ...
- 19.4k
287
votes
25
answers
680k
views
Error: ANDROID_HOME is not set and "android" command not in your PATH. You must fulfill at least one of these conditions.
I'm trying to install PhoneGap and I'm getting the following error:
Error: ANDROID_HOME is not set and "android" command not in your PATH. You must fulfill at least one of these conditions.
...
- 2,901
26
votes
5
answers
32k
views
Working with an Access database in Python on non-Windows platform (Linux or Mac)
I want to access the data in a Microsoft Access database. I have some .accdb and .mdb files and want to read them in Python.
From my research, pyodbc can only be used on Windows platform, but I am ...
- 619
15
votes
4
answers
17k
views
Re-paint on translucent frame/panel/component.
I'm trying to create a translucent window with Java on OSX and add a JLabel to it.
This JLabel changes its text every second....
However the component is not repainting well.
How can I solve ...
- 198k
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
...
- 40k
319
votes
21
answers
162k
views
Getting a "This application is modifying the autolayout engine from a background thread" error?
Been encountering this error a lot in my OS X using swift:
"This application is modifying the autolayout engine from a background thread, which can lead to engine corruption and weird crashes. ...
- 12.4k
237
votes
34
answers
459k
views
Location of my.cnf file on macOS
I'm trying to follow along this tutorial to enable remote access to MySQL. The problem is, where should my.cnf file be located? I'm using Mac OS X Lion.
- 2,630
20
votes
2
answers
24k
views
clang-7: error: linker command failed with exit code 1 for macOS Big Sur
Installing R packages that need compiling in macOS is broken since Big Sur. Here is such an example.
> install.packages('nlme')
There is a binary version available but the source version is ...
- 23.2k
270
votes
8
answers
215k
views
RE error: illegal byte sequence on Mac OS X
I'm trying to replace a string in a Makefile on Mac OS X for cross-compiling to iOS. The string has embedded double quotes. The command is:
sed -i "" 's|"iphoneos-cross","llvm-gcc:-O3|"iphoneos-cross"...
- 101k