There is a LOT of work going into posix compatibility libraries for OS/2. Go look at [link|http://os2ports.org|http://os2ports.org] and [link|http://unixos2.org|http://unixos2.org]. While my knowledge of stuff like modules and other *nix specific setup stuff, a lot of the programs like the gnu text and file utils and so on are very familiar to me... they've been ported to my fave platform for many years now.