Shell history
Joseph S. D. Yao
jsdy at hadron.UUCP
Tue Mar 25 16:44:51 AEST 1986
In article <14797 at onfcanim.UUCP> dave at onfcanim.UUCP (Dave Martindale) writes:
>But nobody has mentioned what I considered the biggest incentive to change
>over. In the old, v6 shell, the standard input of any commands that were
>invoked from a shell script was the shell script itself. ...
>... it meant that you could *not* write shell scripts that were to be
>used as filters, even if their execute bit was set, since the standard input
>of the shell at the time it was forked was no longer available.
The Mashey shell under PWB 1.0 ("System I"), at least the version that
I and many others used, had the construct "< --" to allow one to read
the shell's original stdin. This was very useful, for all the reasons
Dave mentions. However, the Bourne mechanism seems better.
--
Joe Yao hadron!jsdy at seismo.{CSS.GOV,ARPA,UUCP}
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