From: cubexyz@gmail.com (Mark Longridge)
Subject: [TUHS] ed.c on Unix v5
Date: Thu, 17 Dec 2015 10:13:37 -0500 [thread overview]
Message-ID: <CADxT5N7R7OTvwSEXh0VTg0e9wx9W8tWdcQSnZUGamiAge3h7Qw@mail.gmail.com> (raw)
Ok, not sure if anyone will want to do this but I've just compiled
ed.c from Unix v6 on Unix v5.
It's not much bigger than the assembled ed, with 1314 lines of C code
the compiled executable is only 6518 bytes vs 4292 for the original. I
was looking at the source code and didn't see anything that the v5 cc
couldn't handle. I trimmed the source a bit, there's a function at the
end called getpid() which is commented out.
The comment says:
/* Get process ID routine if system call is unavailable. */
but my version of v5 does have that system call so it's all good.
It's been run a few times and it seems to work just fine. It may even
have a few more features than the v5 ed, I'm not sure yet :)
Mark
next reply other threads:[~2015-12-17 15:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-17 15:13 Mark Longridge [this message]
2015-12-19 2:27 ` Dave Horsfall
2015-12-19 8:34 ` Mark Longridge
2015-12-19 14:57 ` Random832
2015-12-19 16:18 ` John Cowan
2015-12-19 17:02 ` Craig Lennox
2015-12-19 20:05 ` Random832
2015-12-19 18:36 ` Marc Rochkind
2015-12-19 12:12 Noel Chiappa
2015-12-19 12:40 ` Mark Longridge
2015-12-19 13:56 Noel Chiappa
2015-12-19 15:10 Noel Chiappa
2015-12-19 15:22 ` Random832
2015-12-19 15:47 Noel Chiappa
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