<fizzie> ` for w in benvenuto bienvenido bienvenue bonvenon tervetuloa v\xc3\xa4lkommen velkomin velkommen welcome welkom wercome willkommen \xd0\xb4\xd0\xbe\xd0\xb1\xd1\x80\xd0\xbe-\xd0\xbf\xd0\xbe\xd0\xb6\xd0\xb0\xd0\xbb\xd0\xbe\xd0\xb2\xd0\xb0\xd1\x82\xd1\x8c; do sed -i -e \'s|bin/[@?]|$HACKENV/&|g\' /hackenv/bin/$w; done

`! emulates the ! command of our former bot EgoBot. You write `! then the name of the language then a program, and it runs the program you give and returns the result. We used to use it to test out esoprograms in-channel all the time, but the set of included esolangs is fairly old now and so it's rarely used.