I needed a reminder of where to look, and the first search result was in a reddit post on r/pop_os with a similar title. Since that sub is currently locked, I found my answer elsewhere. I decided it would be useful to post the info here too. I’ll write my answer below, and someone can write a better one if they have it.

(p.s. Thanks for keeping the reddit sub private; I think it’s the right decision since the major reasons for the blackout have not changed.)

  • @zipsglacierOPEnglish
    4•2 years ago

    Here’s what worked for me.

    The most likely places for user-installed applications:

    • ~/.local/share/applications
    • ~/.local/share/flatpak/exports/share/applications

    The first of these is for .deb applications, and the second is for flatpak.

    Other places:

    This answer on ask ubuntu says the default search also includes applications directories that exist under the directories included in the variable $XDG_DATA_DIRS.

    This flatpak github comment gives the directory above for flatpak, along with a lot of complicated explanation and other possible locations. If you need to know that, you should probably just read it there.