NetBSD 1.6.1 behaves the same as NetBSD -current: $ uname -a; ./testcount.sh NetBSD dns2.pino.net 1.6.1 NetBSD 1.6.1 (PinoAMDfire) #0: Fri Dec 26 20:22:46 PST 2003 root@robin.pino.net:/usr/src/sys/arch/i386/compile/PinoAMDfire i386 do_none 0 1 2 3 do_pipe 0 0 0 0 do_redir 0 1 2 3 $