[TUHS] Shell control through external commands

[Joerg Schilling]

Tony Finch <dot at dotat.at> wrote:

> Joerg Schilling <schily at schily.net> wrote:
> >
> > The colon was introduced by AT&T around 1983.
>
> It's a builtin in the v7 Bourne shell - see SYSNULL in msg.c (which
> has the command name table) and in xec.c (which has the implementation)

You are missinterpeting things.

The colon in line one as a hint to a modified csh to call the Bourne Shell  
first appeared around 1983.


Jörg

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