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This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles. For more information about the manual page format, see the manual page. Installing applications on macOS and OS X computers is easy to do when deploying the apps as packages through the Terminal using the Installer command for quiet deployments across your network. X Attach to a not detached screen. (Multi display mode).X Execute cmd as a screen command in the specified session. Interactive commands (default key bindings): Control-a? Display brief help Control-a 'List all windows for selection Control-a ' Prompt for a window name or number to switch to. Control-a 0 Select window 0 Control-a 1 Select. Unix Commands Unique to Mac OS X / Darwin. This page lists command-line programs that are found only or almost only on Darwin, the Open Source version of Unix used in Mac OS X. This information on this page is a pre-publication version of Appendix A of Unix for Mac OS X Tiger. For more information on Darwin, including access to the source code. Jul 09, 2021 When we think of the macOS user interface, we think of the graphical UI—pointing and clicking icons, with a cursor, menus, windows, etc. But there’s another UI built into macOS: the command-line interface, which involves typing commands like the days of old. It can be a more efficient way of using your Mac—instead of pointing,.

For the macOS platform, you can install the Azure CLI with homebrew package manager. Homebrew makes it easy to keep yourinstallation of the CLI update to date. The CLI package has been tested on macOS versions 10.9 and later.

The current version of the Azure CLI is 2.26.1. For information about the latest release, see the release notes. To find your installed version and see if you need to update, run az version.

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Install with Homebrew

Homebrew is the easiest way to manage your CLI install. It provides convenient ways to install, update, and uninstall.If you don't have homebrew available on your system, install homebrew before continuing.

You can install the CLI by updating your brew repository information, and then running the install command:


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The Azure CLI has a dependency on the Homebrew python3 package, and will install it.The Azure CLI is guaranteed to be compatible with the latest version of python3published on Homebrew.

You can then run the Azure CLI with the az command. To sign in, use az login command.

  1. Run the login command.

    If the CLI can open your default browser, it will do so and load an Azure sign-in page.

    Otherwise, open a browser page at and enter theauthorization code displayed in your terminal.

    If no web browser is available or the web browser fails to open, use device code flow with az login --use-device-code.

  2. Sign in with your account credentials in the browser.

To learn more about different authentication methods, see Sign in with Azure CLI.


If you encounter a problem when installing the CLI through Homebrew, here are some common errors. If you experience a problem not covered here, file an issue on github.

Completion is not working

The Homebrew formula of Azure CLI installs a completion file named az in the Homebrew-managed completions directory (default location is /usr/local/etc/bash_completion.d/). To enable completion, please follow Homebrew's instructions here.

Unable to find Python or installed packages

There may be a minor version mismatch or other issue during homebrew installation. The CLI doesn't use a Python virtual environment, so it relies on findingthe installed Python version. A possible fix is to install and relink the python3 dependency from Homebrew.

CLI version 1.x is installed

If an out-of-date version was installed, it could be because of a stale homebrew cache. Follow the update instructions.

Proxy blocks connection

You may be unable to get resources from Homebrew unless you have correctly configured it touse your proxy. Follow the Homebrew proxy configuration instructions.


If you are behind a proxy, HTTP_PROXY and HTTPS_PROXY must be set to connect to Azure services with the CLI.If you are not using basic auth, it's recommended to export these variables in your .bashrc file.Always follow your business' security policies and the requirements of your system administrator.

In order to get the bottle resources from Homebrew, your proxy needs to allow HTTPS connections tothe following addresses:



The CLI is regularly updated with bug fixes, improvements, new features, and preview functionality. A new release is available roughly everythree weeks.

The CLI provides an in-tool command to update to the latest version:


The az upgrade command was added in version 2.11.0 and will not work with versions prior to 2.11.0. Older versions can be updated by reinstalling as described in Install the Azure CLI.

This command will also update all installed extensions by default. For more az upgrade options, please refer to the command reference page.

You can also update your local Homebrew repository information and then upgrade the azure-cli package.


If you decide to uninstall the Azure CLI, we're sorry to see you go. Before you uninstall, use the az feedback command to let us knowwhat could be improved or fixed. Our goal is to make the Azure CLI bug-free and user-friendly. If you found a bug, we'd appreciate it if you file a GitHub issue.

Use homebrew to uninstall the azure-cli package.

Other installation methods

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If you can't use homebrew to install the Azure CLI in your environment, it's possible to use the manual instructions for Linux. Note thatthis process is not officially maintained to be compatible with macOS. Using a package manager such as Homebrew is always recommended. Only use the manualinstallation method if you have no other option available.

For the manual installation instructions, see Install Azure CLI on Linux manually.

Next Steps

Now that you've installed the Azure CLI, take a short tour of its features and common commands.

Multiplex a physical terminal between several processes (typically interactive shells).

When screen is called, it creates a single window with a shell in it (or the specified command) and then gets out of your way so that you can use the program as you normally would.

Then, at any time, you can:

Create new (full-screen) windows with other programs in them (including more shells)


Kill existing windows

View a list of windows

Switch between windows - all windows run their programs completely independent of each other. Programs continue to run when their window is currently not visible and even when the whole screen session is detached from the user's terminal.

To start screen automatically at login, set your .profile file to read:

exec screen

The interactive commands above assume the default key bindings. You can modify screen’s settings by creating a ~/.screenrc file in your home directory. This can change the default keystrokes, bind function keys F11, F12 or even set a load of programs/windows to run as soon as you start screen.

Attaching and Detaching

Once you have screen running, switch to any of the running windows and type Control-a d. this will detach screen from this terminal. Now, go to a different machine, open a shell, ssh to the machine running screen (the one you just detached from), and type: % screen -r

This will reattach to the session. Just like magic, your session is back up and running, just like you never left it.

Exiting screen completely

Screen will exit automatically when all of its windows have been killed.

Close whatever program is running or type `Exit ' to exit the shell, and the window that contained it will be killed by screen. (If this window was in the foreground, the display will switch to the previous window)

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When none are left, screen exits.

This page is a summary of the options available, type man screen for more.

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“Growing old is mandatory, but growing up is optional” ~ Motto of the Silver Screen Saddle Pals

Related macOS commands:

Macos Terminal Manual

tset - Select your terminal type.
infocmp - compare or print out terminfo descriptions.
exit - Exit the shell.
nohup - Run a command immune to hangups.
screen FAQ - Jürgen Weigert.
kickstart - Configure Apple Remote Desktop.
tmux - A terminal multiplexer much like screen, create and access multiple terminals from a single screen.
Byobu - An open source text-based window manager and terminal.

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