However, I installed VICE, but no icon appears
It's been a while since I used Ubuntu, but I IIRC it used to put the VICE icons in some really strange section of the start menu - like "System monitors" or something like that. Check the entire menu for the x* entries, they should be there...
Hm, wait - I just downloaded the
actual vice package from the Ubuntu repositories and checked the *.desktop files in there (little text files that tell your system what icon to use for an application what description to put into help bubbles and
where to put it in the menu. The relevant line in x64.desktop says:
Categories=Application;X-Debian-Applications-Emulators;
Neither "Application" nor "X-Debian-Applications-Emulators" are standard categories, afaik - which means the package maintainer for VICE on ubuntu would have screwed up - i.e. it's a bug.
Fix:
open a terminal (or use alt-f2), type:
gksudo leafpad /usr/share/applications/x64.desktop
followed by enter. Replace "Application" in the line mentioned above with "Game". Then save and exit. Do the same for the other executables (yakumo9275 listed them).
I'm not sure how/when Ubuntu rereads information from your modified *.desktop files, you might have to log off and on again for the changes to take effect.
Are you aware that you have to install the Commodore ROMs seperately? The can't be legally distributed with the emulator.
I don't know where to look for the executable.
You can run any installed program by simply typing its name in the console - or use the alt-f2 shortcut yakumo9275 mentioned.