\x89\x50\x4E\x47\x0D\x0A\x1A\x0A PNG  \x89\x50\x4E\x47\x0D\x0A\x1A\x0A #! /bin/sh case `uname` in Linux*) ;; *) echo Probably not on a Linux system 1>&2 exit 1;; esac set -v h2py -i '(u_long)' /usr/include/sys/types.h /usr/include/netinet/in.h /usr/include/dlfcn.h