Marcus Thiessel <marcus(a)xemacs.org&gt; writes: Well, my (old and outdated) 2.0 Linux system documents clone(2) in some detail, so its use must transcend "use with kernel threads". Hopefully it has developed since the 2.0 kernel, since the flags it accepts appear to be quite sparse: pid_t clone(void *sp, unsigned long flags) DESCRIPTION clone is an alternate interface to fork, with more options. fork is equivalent to clone(0, SIGCLD|COPYVM). If sp is non-zero, the child process uses sp as its ini­ tial stack pointer. The low byte of flags contains the signal sent to the par­ ent when the child dies. flags may also be bitwise-or'ed with either or both of COPYVM or COPYFD. -- Hrvoje Niksic <hniksic(a)srce.hr&gt; | Student at FER Zagreb, Croatia --------------------------------+-------------------------------- Old numerical analysts never die, they just get disarrayed.