Catalina Install Xcode Command Line Tools

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Can't install the software because it is not currently available from the Software Update server.Hey, guys in this video I'm going to show you how you can in. If you don’t intend to use ios. rules, it is sufficient to install the Xcode command line tools package by using xcode-select: xcode-select -install Otherwise, for ios. rule support, you must have Xcode 6.1 or later with iOS SDK 8.1 installed on your system.

This is a list of commonly encountered problems, known issues, and their solutions.

`brew` complains about absence of “Command Line Tools”

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Let’s install a real version of Python. Before installing Python, you’ll need to install GCC. GCC can be obtained by downloading XCode, the smaller Command Line Tools (must have an Apple account) or the even smaller OSX-GCC-Installer package. Click on install and follow the rest of the instructions in prompt to reinstall command line developer tools. If for some reasons, you do not get the prompt right after uninstalling your previous command line developer tools, no need to panic. Run the following command to get the prompt. Xcode-select -install.

You need to have the Xcode Command Line Utilities installed (and updated): run xcode-select --install in the terminal.

Ruby: `bad interpreter: /usr/bin/ruby^M: no such file or directory`

You cloned with git, and your Git configuration is set to use Windows line endings. See this page: https://help.github.com/articles/dealing-with-line-endings

Ruby: `bad interpreter: /usr/bin/ruby`

You don’t have a /usr/bin/ruby or it is not executable. It’s not recommended to let this persist; you’d be surprised how many .apps, tools and scripts expect your macOS-provided files and directories to be unmodified since macOS was installed.

`brew update` complains about untracked working tree files

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After running brew update, you receive a Git error warning about untracked files or local changes that would be overwritten by a checkout or merge, followed by a list of files inside your Homebrew installation.

This is caused by an old bug in in the update code that has long since been fixed. However, the nature of the bug requires that you do the following:

If brew doctor still complains about uncommitted modifications, also run this command:

`launchctl` refuses to load launchd plist files

When trying to load a plist file into launchctl, you receive an error that resembles

These are likely due to one of four issues:

You are using iTerm. The solution is to use Terminal.app when interacting with launchctl.
You are using a terminal multiplexer such as tmux or screen. You should interact with launchctl from a separate Terminal.app shell.
You are attempting to run launchctl while logged in remotely. You should enable screen sharing on the remote machine and issue the command using Terminal.app running on that machine.
You are su‘ed as a different user.

`brew upgrade` errors out

When running brew upgrade, you see something like this:

This happens because an old version of the upgrade command is hanging around for some reason. The fix: