I've listed what each of those files contains, but really, we don't care what's in them all that matters is that at least one of them will get modified when our network connection changes. /Library/Preferences/SystemConfiguration/.plist (contains settings and preferences for wi-fi networks)./Library/Preferences/SystemConfiguration/ist (contains settings for all your network interface devices)./etc/nf (contains the DNS servers your computer is currently using).We want our program to run whenever our wi-fi network changes, so are there any files that get updated when that happens? Yes there are these three: You can pick one or a few files for it to monitor, and whenever those files get modified, launchd will instantly start your program. One of the conditions it can monitor is if a file changes. It's very nifty I definitely recommend reading more about it on or Apple's developer docs. It can automatically start programs based on certain conditions and keep them running and provide them network sockets and so forth. Launchd is Mac OS X's system for managing recurring/long-running programs ('daemons', in fancier lingo). If you don't care about that and just want the script to copy for yourself, skip down to ' The final script'. Heads up: This blog post describes the process of building this script.

Using Mac OS X's launchd, I was able to fully automate my Slack status by having my laptop send a request to Slack's API based on which wi-fi network I connected to.

The answer is yes!, and it turned out to be easier than I expected. My immediate thought when I'm getting fed up with a tedious daily task is, 'can I automate this?' I immediately took to this feature and always tried to set 'Working remotely' or 'In the office' each morning, but I'm very forgetful, and would often notice at the end of the day that I had been set to the wrong location for the entire day. Earlier this year, Slack added statuses, which allows you to show an emoji next to your name to indicate what you're up to. I alternate between working at home and in the office a lot, and I like to keep my coworkers informed about where I am.

Slack status io