redhat man page for pipe

PIPE(2) 						     Linux Programmer's Manual							   PIPE(2)

NAME
       pipe - create pipe

SYNOPSIS
       #include <unistd.h>

       int pipe(int filedes[2]);

DESCRIPTION
       pipe  creates  a pair of file descriptors, pointing to a pipe inode, and places them in the array pointed to by filedes.  filedes[0] is for
       reading, filedes[1] is for writing.

RETURN VALUE
       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

ERRORS
       EMFILE Too many file descriptors are in use by the process.

       ENFILE The system file table is full.

       EFAULT filedes is not valid.

CONFORMING TO
       SVr4, SVID, AT&T, POSIX, X/OPEN, BSD 4.3

SEE ALSO
       read(2), write(2), fork(2), socketpair(2)

Linux 0.99.11							    1993-07-23								   PIPE(2)