Named pipes: mknod()

#include <stdio.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

int main() {

unlink( “namedPipe” );

mknod( “namedPipe”, S_IFIFO, 0 );

chmod( “namedPipe”, 0600 );

if( fork() == 0 ) {

int fd = open( “namedPipe”, O_WRONLY );

dup2( fd, fileno(stdout) ); close( fd );

execlp( "ruptime", "ruptime", (char *) 0 );

} else {

int fd = open( “namedPipe”, O_RDONLY );

dup2( fd, fileno(stdin) ); close( fd );

execlp( "sort", "sort", "-r", (char *) 0 );

}

}

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