From: Tanaka Akira <akr@...17n.org>
Date: 2000-11-29T12:40:49+09:00
Subject: [ruby-dev:11669] Re: IO (Re: fork problem?)

In article <hvoofz05uwz.fsf@coulee.m17n.org>,
  Tanaka Akira <akr@m17n.org> writes:

> % ruby -e 'STDERR.print IO.new(1, "r").read'| ruby -e 'IO.new(0, "w").print "hello\n"'
> hello

$B$3$l$K4XO"$7$F$$$/$D$+;n$7$F$$$F;W$C$?$N$G$9$,!"(BSTDIN, STDOUT, STDERR
$B$O>o$K(B IO $B$J$s$G$7$g$&$+(B?

$BNc$($P!"(Btcpserver $B$+$iF0$+$9%W%m%0%i%`$G$OI8=`F~NO!"I8=`=PNO$O%=%1%C%H(B
$B$G$9!#(B

% tcpserver 0 9001 ruby -e 'STDERR.print STDIN.stat.inspect'
#<File::Stat dev=0, ino=2818588, mode=49663, nlink=1, uid=23483, gid=23483, rdev=0, size=0, blksize=4096, blocks=0, atime=Wed Nov 29 12:27:05 JST 2000, mtime=Wed Nov 29 12:27:06 JST 2000, ctime=Wed Nov 29 12:27:06 JST 2000>
% uname -a
Linux cvs 2.2.13 #1 Sat Dec 25 10:25:51 JST 1999 i686 unknown

# $B$o$+$j$K$/$$$N$G$9$,!"(Bmode $B$+$i(B socket $B$G$"$k$3$H$,3NG'$G$-$^$9!#(B
# fstat(2) $B$GD4$Y$k$N$,K\Ev$K%]!<%?%V%k$G$"$k$+$I$&$+$O<+?.$,$"$j$^$;(B
# $B$s$1$l$I!#(B

$B$3$N$h$&$J>l9g!"(BSTDIN $B$d(B STDOUT $B$O(B TCPSocket $B$N%$%s%9%?%s%9$G$"$k$H4r(B
$B$7$$$H;W$&$N$G$9$,!#$?$H$($P!"(Bpeeraddr $B$GAj<j$rD4$Y$?$j!"(BMSG_PEEK $B$J(B
recv $B$G@hFI$_$7$?$j(B...

perl $B$J$i$I$s$J%U%!%$%k%O%s%I%k$K$b(B getpeername $B$d(B recv $B$rH/9T$G$-$k$N(B
$B$GLdBj$K$J$i$J$$$s$G$9$1$I$M!#(B

$B$"$H!"$b$72DG=$J$i$P!"FI$_=q$-$N(B mode $B$b(B file descriptor $B$+$iH=CG$7$F(B
$B$/$l$k$H3Z$7$$$H;W$&$N$G$9$,!"$d$j$+$?$rCN$C$F$$$k?M$O$$$^$;$s$+(B?
-- 
[$BEDCf(B $BE/(B][$B$?$J$+(B $B$"$-$i(B][Tanaka Akira]
$B!V$/$C$@$i$J$$%3%HJ9$$$A$c$C$?$M!<$(C"=(B $B$4$C$a!<$s$(C"=$B!W(B
  ($BKbK!;H$$M\@.@lLg(B $B%^%8%C%/%9%?!<3X1!(B 2, $BFn_7%_%E%-(B)