Oct 09, 2019 Once Terminal says 'Install media now available,' it is safe to right-click the removable drive on the desktop renamed 'Install macOS Catalina' and select the 'Eject' command. It is now safe to. Exit the terminal and open the disk utility and format the array APFS; Exit disk utility and install macOS Catalina. The installer will continue again after the restart. At the end you will see that the system cannot be installed. Remove installer & Reboot this is necessary to continue with the internal drive and not with the installer on the usb. The rest of this article will explain how to clean install macOS Catalina. Tip: Clear out the junk before installation Before the clean installation of macOS 10.15 Catalina it’s recommended that you first delete junk and dusty files from the current macOS.
Xcode IDE contain Command-Line utilities. But separate Command-Line installer cause errors for use by Homebrew, Python, and other development tools
- What Has Been Installed?
- Xcode Version
- Xcode IDE install from Terminal
- B) Initial IDE install using web App Store
This tutorial describes the installation and usage of Apple’s Xcode set of utilities for macOS developers.
Xcode is Apple’s free app for developing custom programs for all Apple devices (macOS, iPhone, iPad, Apple Watch). Increasingly, Machine Learning developers are using the Swift language.
Since the Apple Store only handles individual .app files, other mechanisms are needed to install additional programs needed as a pre-requisite by Homebrew, Python, and other development programs.
BTW Xcode only works on macOS. There is no Windows PC version.
PROTIP: Skip Apple’s websites and App. Click here for install instructions (below).
Otherwise, read on for a run-around.
Use an internet browser to view Apple’s Xcode marketing page at:
Xcode “includes everything you need to create amazing apps for all Apple platforms. Now Xcode and Instruments look great in the new Dark Mode on macOS Mojave. The source code editor lets you transform or refactor code more easily, see source control changes alongside the related line, and quickly get details on upstream code differences. You can build your own instrument with custom visualization and data analysis. Swift compiles software more quickly, helps you deliver faster apps, and generates even smaller binaries. Test suites complete many times faster, working with a team is simpler and more secure, and much more.”.
BTW the “Apple platforms” include MacOS, iPhone, iPad, Apple TV, and Apple Watch.
Xcode does not come with macOS because of its large size and because many users of macOS don’t need it to do software development.
Developers who use another IDE (such as Visual Studio, Eclipse, etc.) would only need to install Xcode’s command line utilities for the GCC compiler Python needs to build code.
PROTIP: Newer versions of Xcode installer also installs a Git client.
Imagine a Venn diagram of overlapping circles:
The Xcode IDE, which can be installed on a Terminal command line interface (CLI) or
downloaded as a package from the App Store.
Either way, Xcode contains:
- Command Line Utilities which can be installed separately on a Terminal command line session.
PROTIP: Xcode IDE cannot be installed if Command Utilities has already been installed.
However, you can switch:
So choose which one you want installed.
What Has Been Installed?
In a Terminal window, find out what has been installed:
That’s the same command as:
If the Xcode-select command is not found, choose to eitherinstall Command Line Tools or install the full Xcode IDE.
You have Command Line Tools installed and not the full Xcode if you see the path where CommandLineTools are installed:
If all you need is Command Line Tools, you’re good to go.
Alternately, if the full Xcode was installed, you would instead see:
Get a list of its folders if Xcode IDE was installed:
The response would be:
PROTIP: If you want the full Xcode IDE when you have the Command Line Tools installed, first uninstall Command Line Tools, then install the full Xcode IDE.
More version information
From within a Terminal, type:
If Command Line Tools was installed, you would see:
If Xcode is installed, you would get a version code that should match up with the Build Number on the Apple web page:
For a more precise version number and other info (macOS Mavericks version and up):
A sample response, at time of writing:
The previous command was constructed based on a search of tools package names:
Get the version of GCC installed:
If Xcode was installed, you would see (at time of writing):
Previously, it was instead:
If Command Line Utilities is installed, you would see (at time of writing):
Identify the path where the make utility Java uses:
a. If Xcode is installed, the response is:
b. If Command Line Utilities is installed, the response is:
c. If no Xcode is installed:
Get the version of the Swift program used to develop iOS mobile apps:
Sample response at time of this writing:
If jamf installed Xcode, you’ll also see:
The above appears regardless of whether Command Line Utilities or Xcode is installed.
From here, uninstall and install Command Line Tools or install the full Xcode IDE.
UnInstall Command Line Tools
PROTIP: This is also how you upgrade Command Line Tools.
Go to the parent folder where Command Line Tools is installed:
Get a list of its folders:
If Command Line Tools were installed, the response would be :
Remove all files in that folder, which requires a password for elevated permissions to get all the files:
The response is a lot of files removed (to the Trash).
Now you can choose to eitherinstall Command Line Tools or install the full Xcode IDE.
Install Command Line Utilities only
See https://developer.apple.com/library/archive/technotes/tn2339/_index.html and http://osxdaily.com/2014/02/12/install-command-line-tools-mac-os-x
To install the whole Xcode IDE:
You should see this pop up:
Manually click “Install”, “Agree”, then “Install” to the “Updates Available” pop-up.
NOTE: The xGB download takes 13 minutes on a 10mbps line.
When you see “The software was installed.”, click “Done” to dismiss the pop-up.
Xcode IDE install from Terminal
Make sure you have at least 13GB free on your hard-drive before attempting installation.
- Click the Apple icon to select “About this Mac”.
- Click “Storage” tab.
In an internet browser, get to the “Mac App Store Preview” for Xcode at
Click View in Mac App Store, then “Open App Store.app” in the pop-up.
Provide your Apple ID and password. Get one if you don’t already have one.
PROTIP: DO NOT install a beta version of Xcode.
The blue “OPEN” icon appears at the upper-right when the app is installed.But don’t click it because we are done.
In Finder, look for Xcode.app in the /Applications folder.
Alternately, on the Touchpad pinch 4 fingers together to click the App Store. Type enough of “Xcode” to filter out others.
To view the version, cursor to the top of the screen and click the program name next to the Apple icon to select “About Xcode”:
A) Initial install from Terminal CLI
Open a Terminal.app console window at any directory to install -all the latest Xcode from Apple:
The response on Catalina version of macOS:
Click the Apple icon at the upper-right corner and select “Shut Down…”.
After starting again
Set Apple’s licensing agreement bit:
Manually agree to the terms.
Get the version number of the new version.
B) Initial IDE install using web App Store
In an internet browser, https://developer.apple.com/download
Sign in to Apple Developer with your email address then click the arrow icon. Enter your password, then click the arrow icon.
Below is the “Software Update” approach:
You’ll need to establish an Apple ID if you haven’t already.
Click the cloud icon Download and provide your Apple ID.
Go through Apple’s location verification if prompted.
Confirm your account.
Click “Allow” to the pop-up “Do you want to download?”.
CAUTION: Make sure that your machine has enough free space available.
These are massive files that may take a while to download if you don’t have a fast internet connection.
NOTE: Each version of Xcode is related to a specific version of the Apple OS Mac operating system.
File Date Download Unpacked Xcode_12.1 2020-10-01 10.5 GB 11.5 GB Xcode_11.5 2020-06-01 7.5 GB ? GB Xcode_10.2.1 2019-04-17 ? GB 6.1 GB Xcode_9.0 2017-09-19 . ? GB ? GB Xcode_8.2.1 8C1002 2016-12-19 ? GB ? GB Xcode_8_beta_2.xip 2016-07-05 5.9 GB 12.32 GB Xcode_7.31 2016-05-03 3.8 GB ? Xcode_4.1 2014- 2.9 GB ? Xcode_3.2.4 2014- 2.? GB ?
Switch to Finder Downloads folder to watch progress on the file name ending with “Download”. The one with a clock icon which signifies downloading.
Return to the versions instructions above to view the updated version.
Delete the installer after you’re done, to reclaim disk space.
Xcode IDE Upgrade
Install Catalina From Terminal
Over time, Apple updates Xcode and its command line utilities.
Click the Apple icon, then click System Preferences. Here is an example notification:
- Search for “Software Updates” or click the icon.
- Click “Update Now” if that appears. (but first do a backup.)
- Click “Agree” to the EULA.
- When done, view the version numbers installed.
Xcode FileMerge tool
Xcode graphically compares files and directories.
Open Xcode. This takes a few seconds.
Right-click on Xcode icon. Select “Open Developer Tool”. Select “FileMerge”.
Specify one file to compare.
Specify the other file to compare.
Install Catalina From Terminal 8
More on OSX
This is one of a series on Mac OSX:
Install Catalina From Terminal 4
Install Catalina From Terminal 6
I start the installer, point it at my external SSD, and it starts chugging, looking all OK. The progress meter says 5 minutes. After around that time, with nothing unusual reported, the screen goes black and the restart sequence begins. But it restarts from my internal disk and the new installation is not complete.
Second attempt, I followed instructions to create a bootable USB installation disk on another USB drive, booted to it and started the installation from there. Same result.