Dec 10, 2019  The XQuartz project is an open-source effort to develop a version of the X.Org X Window System that runs on OS X. Together with supporting libraries and applications, it forms the X11.app that Apple shipped with OS X versions 10.5 through 10.7. Apple used to ship an X11 display server with Mac OS X, but at some point stopped.

• Mac Install X11
• What Is X11 App For Mac Download

XQuartz is an open-source version of the X.Org X server, a component of the X Window System (X11, or shortened to simply X, and sometimes informally X-Windows) that runs on macOS.^[1] It formally replaced Apple's internal X11 app. The name 'XQuartz' derives from Quartz, part of the macOS Core Graphics framework, to which XQuartz connects these applications. XQuartz allows cross-platform applications using X11 for the GUI to run on macOS, many of which are not specifically designed for macOS. This includes numerous scientific and academic software projects.^[2]

History[edit]

X11.app was initially available as a downloadable public beta for Mac OS X 10.2 Jaguar and later included as a standard package for Mac OS X 10.3 Panther. In Mac OS X 10.4 Tiger X11.app was an optional install included on the install DVD. Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, and Mac OS X 10.7 Lion installed X11.app by default, but from OS X 10.8 Mountain Lion on Apple dropped dedicated support for X11.app, with users being directed to the open source XQuartz project (to which Apple contributes) instead.^[2]

In Mac OS X 10.4 Tiger, Apple's X11 implemented X11 protocol release 6.6 (X11R6.6). This implementation includes an XFree86 4.4 based X11 window server, Quartz rootless window manager, libraries, and basic utilities such as xterm.^[3] 'Rootless' means that X window applications show up on the Quartz desktop, appearing like any other windowed Quartz application (that is, not in a virtual desktop contained within another window). In Mac OS X Leopard, X11 was updated to use X.Org Server (X11R7.2) rather than XFree86.^[4] The source code for X11 is available from Apple. Some source code is available under the Apple Public Source License while the bulk is licensed under the MIT License.

Current version[edit]

The current version of XQuartz is a DDX (Device Dependent X^[5]) included in the X.Org Server and implements support for hardware-accelerated 2D graphics (in versions prior to 2.1), hardware OpenGL acceleration and integration with Aqua, the macOS graphical user interface (GUI). As of version 2.7.11, XQuartz does not provide support for high-resolution Retina displays to X11 apps, which run in pixel-doubled mode on high-resolution displays.

List of versions (since 2010)[edit]

See also[edit]

• MacX, X11 support on Classic Mac OS
• XWayland, to support X application under Wayland
• XDarwin, an implementation of X for macOS that preceded XQuartz, and supports versions of macOS before 10.3 unlike XQuartz

References[edit]

1. ^'XQuartz'.
2. ^ ^ab'Apple Removes X11 in OS X 10.8 Mountain Lion, Shifts Support to Open Source XQuartz'. Retrieved September 14, 2016.
3. ^'XQuartz'. September 14, 2016.
4. ^'Inside Leopard: Under-the-hood, Page 2'. Macworld. November 2, 2007. Retrieved June 30, 2020.
5. ^'Glossary'. www.x.org. Retrieved September 15, 2016.
6. ^'XQuartz - Releases Archive'. www.xquartz.org. Retrieved January 22, 2017.

External links[edit]

Actually to make this much easier
do this
ssh hostname -l LoginName -X
if you use the capital X you will get X11 forwarding
if you instead use
ssh hostname -l LoginName -x
you turn off the X forwarding.
which is good if you are on a not too fast connection. or if you are running something like SAS or Matematica.

I usually recommend the user@hostname format: it is similar to an e-mail address and thus easier for users to remember than a odd flag. I also recommend that the default username be placed into the user's ~/.ssh/config file, as I see frequent login failures on systems at work from people who keep forgetting that their account names are different on different systems.

For example, say the client system has the username johndoe, while the remote server example.org account for the same person is jdoe. The following entry in ~/.ssh/config will let johndoe on the client system simply type ssh example.org and login automagically as jdoe.

Mac Install X11

This hint and the article it references is mistaken in their implication that there is anything 'broken' about Apple's X11.
Apple's X11 is configured exactly the same way as every other X server out there and allows properly authenticated X clients to connect to it.
The problem is authentication. Ssh has a nice facility to help you copy the authentication tokens to remote machines as you connect to them. There are other ways to do this, including a script I used to hack on called 'rxx'. Ssh, as it's its nature, makes this more secure. Ssh also secures the X connection back to the server.
X11 isn't known for its high level of security. Ssh fills in the gaps, but isn't a necessary component of X11, and as such just because Apple doesn't configure ssh to work with X11, this doesn't mean Apple's X11 is 'broken'.
Just wanted to clear this point up. If you want to know more about X authentication, try googling for 'xauth'.
Cheers!

The suggested fix involves making changes to /etc/csh.login. I'm a little leery of making changes to system files. Can the Unix gurus verify that it's safe to make this change?

My immediate reaction is that the changes to /etc/csh.login are pretty safe, fairly innocuous, and useful if you use X11 and Terminal.
The changes to ssh_config and sshd_config I'm less happy about. They are probably OK, but you don't need to mess with the protocol and cipher preferences in order to get X11 forwarding working.
The author should explain what these modifications do beyond 'fixing' X11. If I didn't know what I was doing, I wouldn't trust them.

The environment variable for DISPLAY needs to be set, but otherwise you can do the rest of it with cmd line flags:
ssh -X -C server.foo.com
-X forwards X, -C turns on compression. Been doing this for years now on OS X.
ssh -X -C server.foo.com '/path/to/my/app' &
will run the remote app. Put it in a script with the .command suffix and you've got a double-click method for X remote apps. I also have my script open X11.app, and check for the window manager (quartz-wm) before executing the ssh command for the true double-click experience; others use applescript to avoid the terminal window but I always have at least one term window open so launching terminal.app is not an issue.
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Regards,
Ed Hintz

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It's worth noting that if you make changes to environment variables whilst X11 is open, they won't be reflected in the X11 environment until you quit and restart X11. In fact X11 can be knobbed until you do restart it.
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--
Ed Lynch-Bell
[email protected]

Has anyone succeeded in launching X11-apps from the OS X terminal after applying this hint?
I want to do it remotely, maybe it is limited to laucnhing apps on the local machine?
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http://www.google.com/search?as_q=%22Authored+by%3A+david-bo%22&num=10&hl=en&ie=ISO-8859-1&btnG=

to launch xwindows apps from Terminal, just start x11.app and set the DISPLAY environment variable:
tcsh% setenv DISPLAY :0.0
bash$ export DISPLAY=:0.0

What Is X11 App For Mac Download

for bash I beleive the proper command is:
if [ ${#DISPLAY} -eq 0 ]; then
export DISPLAY=':0.0'
fi
Which you add to your .profile file
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