[TUHS] SDB debugger

Henry Bent henry.r.bent at gmail.com
Mon May 4 02:53:41 AEST 2020

On Sun, 3 May 2020 at 12:14, Clem Cole <clemc at ccc.com> wrote:

> Paul W -- do you remember if DEC TLG did a version of dbx for Ultrix
> (Leslie might remember)?  FWIW: I know that DEC had a number of different
> debugger projects so on the UNIX side over the years, and I really don't
> remember what was done for the VAX, as I was not there at the time.  By
> MIPS/Alpha in the mid-late 90's there was a whole new debugger stream that
> had been developed at part of GEM, but there was another one that came from
> MIPs too which was based on dbx.

Perhaps unsurprisingly, as Ultrix 1 was basically just 4.2BSD with some
tweaks/addons, dbx has been there since the beginning as /usr/ucb/dbx.  The
binary in 1.1 has SCCS strings mostly dating it to '83 and the 2.0 source
tree has dates that are mostly December '84.

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