How can I get "networksetup -getairportnetwork en0" to report my wireless router's name on MacBook Pro M4 Tahoe 26.2?

Try this:

iface=$(networksetup -listallhardwareports | awk '/Wi-Fi/ {getline;print $2}')
ipconfig getsummary $iface | egrep -io '(\bSSID) \: \w+'

SSID : Bifrost6

or…

iface=$(networksetup -listallhardwareports | awk '/Wi-Fi/ {getline;print $2}')
ipconfig getsummary $iface | egrep -io '(\bLinkStatusActive) \: \w+'

LinkStatusActive : TRUE

Tested: Tahoe 26.2

I’m getting the impression some folks were being sneaky-bad with their shell scripts, and this location data is accordingly now being better protected.

Related:

https://apple.stackexchange.com/questions/475370/networksetup-getairportnetwork-return-you-are-not-associated-with-an-airport-ne

wdutil also gets the info, though requires sudo”

sudo wdutil info

It would seem if you have a Wi-Fi LinkStatusActive TRUE, then you should have an SSID associated with that same Wi-Fi (iface) port. We have the same hardware and operating system version.

If you are not using Apple's AirPort Base Station or Time Capsule you will get one or the other of the following errors:

I am using a Synology RT6600ax router. However, at the moment I am using the Netgear NightHawk MR-6550 Hotspot with a T-Mobile data connection and Wi-Fi 6e. Both of my previous commands produce the same result on this device.

How much control do you have over the availability of the updates, and over the apps involved? This can go in several directions, including integrating Sparkle Framework into the apps where extensive app control is available, or integrating push notifications for updates, etc.

As for your question, I usually try the transfer connection. Network tests and reachability tests and SSID checks and preflighting all still need tests for a blocked or failed connection attempt (as the network state can change between the test and the transfer attempt, or can fail during the transfer, etc), and having a Wi-Fi connection does not mean you have a routable network connection, so the preflighting tests aren’t really all that helpful.

Or more succinctly: try it, don’t bother testing whether you might be able to try it.

Quinn the Eskimo has some opinions over in the developer forums about not bothering with preflight reachability tests, as do the Apple docs (image below). Also see waitsForConnectivity mentioned below, though that can mean using Swift or ObjC in addition to the bash or zsh.

Unrelated to the preflight, and depending on connection security, I’d probably also use sftp and keypairs or maybe certificates, or use curl and certificates, to avoid having embedded passwords around.

Semi-related: https://github.com/andmpel/MacOS-All-In-One-Update-Script