The files are here; just compile them all together into one executable.
It figures out based on the number of arguments whether you are converting
words to hex or vice versa.
-rw-r--r-- 1045 Jan 3 16:58 convert.c
-rw-r--r-- 709 Jan 3 16:58 ptxt.c
-rw-r--r-- 22374 Jan 3 16:58 sk.c