A very minimal implementation of cat. This program doesn't depent on libc or any other system header, it uses inline assembly to directly call linux system calls.
To build just run the BUILD.sh script, this will generate one version compiled with gcc and one
compiled with clang.
For comparison hcat-gcc is 1.2kb the default linux cat is 43kb
hcat doesn't have many features but it is quite fast, it is not really optimised for speed though.