[TUHS] UNIX of choice these days?
clemc at ccc.com
Mon Sep 25 03:33:15 AEST 2017
BTW the time it was added (4.4), most of the tools did not use it. Which
was sad... and Ron points out.
On Sun, Sep 24, 2017 at 11:26 AM, Christian Barthel <bch at online.de> wrote:
> ron minnich <rminnich at gmail.com> writes:
> > [1:text/plain Hide]
> > ptrace replaces procfs? Wow, that's a disappointing turn of events. It's
> > also against the flow of thought in the Unix community I knew in 1980. If
> > somebody has any of the old ca-1980 BSD manuals, you should find a BUGS
> > section on ptrace advocating a move to a file-system-like interface. I
> > always assumed ken wrote that little note when he was visiting UCB --
> > anybody know?
> I am also surprised to hear that ptrace replaces procfs. In the 4.4BSD
> Book is a chapter about process debugging (chapter 4) with ptrace and
> it says:
> ``The ptrace facility is inefficient for three reasons. [...]''
> And later, it mentions the proc filesystem:
> ``To address these problems, 4.4BSD added a /proc filesystem, similar to
> the one found in UNIX Eight Edition [Killian, 1984]. [...]''
>  The Design and Implementation of the 4.4BSD Operating System,
> M.K. McKusic, Keith Bostic, Michael J Karels, and John Quarterman,
> Addison-Wesley, Reading, 1996, ISBN 0-201-54979-4.
> Kind regards,
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