If you happen to have access to a Mac that is running a prior version of MacOS (Sierra or prior), or you happen to have an older MacOS system software backup laying around from Time Machine or otherwise, you can actually just copy the old binaries from that computer or backup to your modern MacOS installation, and telnet will work just fine. Installing Telnet in MacOS Mojave & High Sierra via Older MacOS Versions or Backups

You’ll know Telnet is working when you are greeted by Star Wars rendered in ASCII characters (and yes seriously, it’s the full movie). One simple way to test that Telnet is working properly after installation is to connect to the goofy Star Wars telnet server, which plays Star Wars in ASCII art: When installation has complete, you can run Telnet as usual:.Hit Return and let Homebrew download and install Telnet to the Mac.Use Homebrew to install telnet with the following command:.Install Homebrew on Mac OS if you haven’t done so already – if you already have Homebrew skip this step.Of course this means you will need to install Homebrew on the Mac first, but if you’re advanced user that spends time in the command line you’ll likely appreciate having Homebrew for other reasons since you Installing Telnet in MacOS with Homebrewīy far the simplest option is for Mac users to install Telnet through Homebrew. This article will assume that you have experience working with the Terminal and command line, since Telnet is entirely command line based. We’ll cover installing Telnet with Homebrew, restoring Telnet from a prior system software release or backup, compiling Telnet from source, as well as a few alternatives to telnet. Accordingly, this tutorial will detail several different ways to get Telnet back in modern versions of Mac OS system software.

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