Adam Majer <adamm@galacticasoftware.com> writes: > Is /sys/types.h included in all Debian or is it specific to Linux only? > Or even worse, is it _very_ bad to assume anything about the include/sys > directory? You mean /usr/include/sys/types.h, right? That file is required to exist by the Posix standard, and some (but not all) of the types in it are guaranteed to exist on all Posix systems. Thomas