NAME exit_group, madvise1, rt_sigaction, rt_sigpending, rt_sigprocmask, rt_sigqueueinfo, rt_sigreturn, rt_sigsuspend, rt_sigtimedwait, ugetrlimit - undocumented system calls CONTENTS Synopsis Description SYNOPSIS Undocumented system calls. DESCRIPTION The 2.4.20 kernel knows 253 syscalls for the i386 architecture. The above ones have not yet been documented. "SEE ALSO" obsolete(2), syscalls(2), unimplemented(2)