How to show text after install?

Hi all, I’m package a software and I need to show some initial information after install OK.
I try to add echo command in install hook, but it does not show.
Who can help me?

Thank you

You cannot show any response or await any input at installation time. You need to move this to the first launch instead.

Thank you.

you’d have to use a command-chain wrapper that shows the message before app start, take a look at this thread:

For GUI snaps you can use yad from such a wrapper, have a look at scripts/ and the respective command: entry in snapcraft.yaml at: