[vcf-midatlantic] Museum 3B1 & PDP-8
mcguire at neurotica.com
Thu Oct 31 14:43:51 EDT 2019
On 10/31/19 1:44 PM, Neil Cherry via vcf-midatlantic wrote:
>>> Personally I would like a better editor than the built in “ed”. Maybe
>>> is the “vi” available?
>> But ed(1) is the standard editor!
> I seem to recall that vi relied on ed and ex. In Linux I don't this is
> the case any longer. I don't know about BSD but would expect that this
> is the case there also.
Vi started life as a "visual" (full-screen) mode within ex. so they
used to be the same editor. The ex editor was originally derived from
ed. Put into the filesystem using links, they look at argv to
determine what mode to enter at invocation time. But that program was a
part of the encumbered BSD code base, until it was open-sourced as a
part of OpenSolaris.
In the intervening years, vim ("VI Modified") became the de-facto
standard implementation of vi in the Linux world. Early Linux
distributions were distributed with "original" vi, however. If memory
serves, this was originally illegal but AT&T eventually let them do it.
Dave McGuire, AK4HZ
New Kensington, PA
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