Retrieve Version from Binary

[nosbig]

I am using the manual binary installation for my primary instance of Memos, and I am writing a script to update the binary to a given release. I'd like to preserve the old binary via a some "mv" operation in my script so that I can very easily roll back to a previous version if needed.

To support this, I would love to get the version number from the binary, but I don't think there's a flag to do this. I use the same technique with Forgejo, I can just call "forgejo --version" and use "cut" to extract the specific version number to feed back into the mv command and rename the old binary before replacing it with a new one. The only way I see of getting the version at the moment is having to open the browser, logging in, and visiting the settings page of the web interface.

Does this seem feasible/of interest to others?

Thanks!