Unable open putty from terminal

Confirm the latest XQuartz is installed.

If so, does the X11 app other related X apps (XTerm, etc) work as expected?

If so, launch the X11 app, and does PuTTY open from there?

If not, check with whoever is maintaining this GTK and this PuTTY port.

If you need ssh, that usually works just fine from the command line and the Apple Terminal app emulator.

If you need telnet, that can be installed from one of the available ports, and that then works from Terminal app/

If you need a terminal emulator with hardware (USB) serial line support, the Serial 2 app works well. There are others.

Why the heck do you want PuTTY on a Mac?

We run into this all the time at work, where a Windows user switches to a Mac, and then proceeds to ask where they can get PuTTY.

Which is silly, as macOS comes with a very good terminal emulator, and ssh, scp and sftp are also included with macOS.

And using Terminal -> Preferences -> Profiles, you can store ssh commands so that when you use Terminal and specify a profile, that profile can issue the ssh command and make your remote connection.

You can even create a bunch of profiles, use those profiles to make your multiple ssh connections, then use Terminal -> Window -> Save Windows as a Group..., And then later select that group and have Terminal automatically create the windows and tabs, and make all the ssh connections. You can even set a window group as the Terminal launching group, and have Terminal start all those ssh connections when you launch Terminal.

And if Terminal is not good enough, then there is iTerm2.com which is a terminal emulator with the kitchen sink thrown in.

Plus a few other terminal emulators for macOS out there. Every one better than PuTTY.

NOTE: If you want to use PuTTY to talk to a serial line, then use Terminal and GNU screen (also included with MacOS). GNU screen can be used to talk to serial ports.

BobHarris wrote:

…NOTE: If you want to use PuTTY to talk to a serial line, then use Terminal and GNU screen (also included with MacOS). GNU screen can be used to talk to serial ports.

Yeah; I’d use the Serial app for that, having used screen and cu and expect and a few other tools on various occasions. Haven’t tried tmux, but, well, Serial works fine.

https://www.decisivetactics.com/products/serial/

Did you logout (or reboot) after installing XQuartz? Not that I want to help you use PuTTY (it is not pretty on a Mac) 😁

Or even screen *in* the terminal:

https://advantech-ncg.zendesk.com/hc/en-us/articles/6321399413657-How-to-connect-to-console-port-on-MacOS-using-Screen-