[TUHS] Shell control through external commands

Joerg Schilling schily at schily.net
Mon Sep 12 22:50:10 AEST 2016


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

-- 
 EMail:joerg at schily.net                  (home) Jörg Schilling D-13353 Berlin
       joerg.schilling at fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
 URL:  http://cdrecord.org/private/ http://sourceforge.net/projects/schilytools/files/'


More information about the TUHS mailing list