How can Homebrew print a beer mug in Terminal?

Solution 1:

Homebrew is open source, so you can read its code to find out how it shows the icon. The line they're using is in the file formula_installer.rb:

print "🍺  " if MacOS.version >= :lion

The first character in the print command is a "🍺", or unicode #1f37a 'BEER MUG'.

So it's not an icon but an funny unicode beer mug :)

BTW, try another variants in terminal:

echo $'\360\237\215\270'
echo $'\360\237\215\271'
echo $'\360\237\215\273'
echo $'\360\237\215\274'