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 codebase in the command line on my MacBook Pro, typed in "git status" in the repository and received an error:
(In 9/2022, this error was much different, but I didn't capture it)
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
Git will not work!
How do I fix Git, and the command-line tools?
The problem is that Xcode Command-line Tools needs to be updated due to OS update.
After opening the terminal after a restart, I tried to go to my code, and do a git status, and I got an error and prompt for command line software agreement.
So press space until you get to the [agree, print, cancel] option, so careful hit space to scroll down to the end, if you blow past It you have to run a command to get it back. Use sudo xcodebuild -license to get to it again.
Just be careful on scrolling down and enter agree and press return and it will launch into an update.
Then I tried to use git after the install, and it prompted me to install Xcode tools again.
I followed my own advice from previous years (see below), and went to https://developer.apple.com/download/all and downloaded
"Command Line Tools for Xcode 14" (You have to log in with your Apple ID and enter MFA code, so have all the devices you need for that handy. Then select "Command Line Tools for Xcode 14", or if you want to get into the alphas or betas, that's up to you. But stable releases are probably the best choice for software developers.
You have to either download the tools from CLI or the developer page and before you can use git, you need to reboot!!! Or you will get stuck in a loop of prompt & downloading
Rebooting will break the loop and complete the installation of your CLI tools including git so that you can get back to work
Solutions for previous years, these may or may not be valid these days as the downloads page has changed significantly:
PREVIOUS YEARS SOLUTIONS, probably #2 is most helpful.
*** Solution #1:
Go back to your terminal and enter:
xcode-select --install
You'll then receive the following output:
xcode-select: note: install requested for command line developer tools
You will then be prompted in a window to update Xcode Command Line tools. (which could take a while)
Open a new terminal window and your development tools should be returned.
Addition: With any major or semi-major update you'll need to update the command line tools in order to get them functioning properly again. Check Xcode with any update. This goes beyond Mojave...
After that restart your terminal
Alternatively, IF that fails, and it might.... you'll get a pop-up box saying "Software not found on server", proceed to solution 2.
*** Solution #2: (Preferred method)
If you hit xcode-select --install and it doesn't find the software, log into Apple Developer, and install it via webpage.
Log in or sign up here:
https://developer.apple.com/download/more/
Look for: "Command Line Tools for Xcode 14.x" in the list of downloads
Then click the dmg and download. (See previous image above) either way, you will probably wind up at an apple downloads webpage.