The 'ping' command on most flavors of Unix has a nifty little feature that lets you select which port to ping on. It's handy when troubleshooting network applications. For example, if some wierd app.

Apple gives it, Apple takes it away: sometimes it happens that familiar apps and features are suddenly missing from one macOS version to the next because the company is apparently no longer interested ...

Network Utility was a fixture of macOS from its early days through macOS 11 Big Sur, when Apple dropped it, instead directing users to use command line tools. Apple’s argument seemed to be that the ...