Date: Mon, 1 Sep 1997 23:39:23 -0700 (PDT) From: Doug White <dwhite@gdi.uoregon.edu> To: Wang Huaibo <bu-fl@cs.sjtu.edu.cn> Cc: questions@FreeBSD.ORG Subject: Re: Quesion Message-ID: <Pine.BSF.3.96.970901233615.3114V-100000@localhost> In-Reply-To: <340AD16A.1A48@cs.sjtu.edu.cn>
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On Mon, 1 Sep 1997, Wang Huaibo wrote: > I wonder what's the difference between /dev/ptyXX and /dev/ttyXX > ( appears in telnetd source file "sys_term.c" )and whether there is > Electronic version of books about Unix design and implementation > downoladable from the net. Well, /dev/ttyXX are physical devices. You'll notice that there are different types of tty devices, particulary ttyd* for dial-in devices and ttyv* for virtual terminals. You'd be more interested in the difference between pty* and ttyp*, which is well explained in the pty(4) man page. For design and implementation, I don't think there's much online documentation except what's in the man pages and in /usr/share/doc/. If you're interested in these topics, the book ``The Design and Implementation of the 4.4BSD Operating System'' (aka the daemon book) is required reading. I forgot where, but FreeBSD users can obtain this book cheaply through an online bookstore, check the -questions archives. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major Spam routed to /dev/null by Procmail | Death to Cyberpromo
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