Martin Peck
Martin Peck I write code, and manage people who write code.

Using iTerm2's Alert on Next Mark for Long Running commands

This isn’t particularly novel, and if I’d RTFM’d the iTerm2 docs I’d know about this already, but I’ve just stumbled across a cool feature of iTerm2 and I thought I’d share it.

When you kick off a long running process from a terminal window, it’s common to then switch to another application while the process runs (in my case, when I’m deploying a number of resources to Azure using an ARM template). What’s even more common is to then forget about that terminal window because (for example) you’ve started to read the entire XKCD archive.

Recently, I read a tweet by @LawrenceGripper

Given I spend most of my terminal-time within iTerm2 on my Mac, this tweet made me wondered if there was something I could do within iTerm 2 that would give me a similar experience. It turns out there is!

iTerm2 has a feature called Alert on Next Mark, which is mentione in their online docs for :

https://www.iterm2.com/documentation-shell-integration.html

Once you have the shell integration installed you can press ⌥⌘A (Opt+Cmd+A) any time you kick off a long running process in your terminal. When you do this, you’ll see an eye image appear top-right of your terminal window:

Now, you can go back to reading the internet while your long running task continues. At the point where it completes, iTerm2 will alert you with a MacOS alert:

This alert isn’t very descriptive, but it’s enough to wake me up from my slumber and get my attention.

One nice aspect of this feature is that you can set up an alert after you’ve run the command. So, if you were expecting something to complete quickly, but it’s taking forever, hit ⌥⌘A, go look at cat gifs, and wait for the alert.

HTH!

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