All you need to install INTERCAL on Interstates is a C compiler.
./configure make make install
Compile your code with
ick (the C-INTERCAL compiler) using the
-s ('States) flag, which enables the Interstates extensions.
Run it with the built-in web server,
gross (General READ OUT Server System):
ick -s hello.i gross ./hello
gross listens on TCP port 10585.
In keeping with the precedent set by INTERCAL to have no precedents, this number holds no significance.
See more on the examples page.