pipe 6943 ext/nkf/nkf-utf8/nkf.c if (pipe(fds) < 0 || (pid = fork()) < 0){ pipe 34 goruby.c if ((isatty(0) && isatty(1) && isatty(2)) && (pipe(rw) == 0)) { pipe 336 io.c ret = pipe(fildes); pipe 340 io.c ret = pipe(fildes); pipe 343 io.c ret = pipe(fildes); pipe 2211 ruby.c if (pipe(fds) == 0) { pipe 2220 ruby.c if (pipe(fds) == 0) {