On 9/5/10 5:36 AM, Pierre Gaston wrote:
> using the following:
>
> false; : | echo $?
>
> bash and ksh93 print 0
> pdksh, dash and zsh print 1
It looks like bash and ksh93 wait for each command in a pipeline to finish
and allow the intermediate commands to set $?, which, depending on timing,
can be seen by subsequent commands in the pipeline. The other shells must
do something different.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU c...@case.edu http://cnswww.cns.cwru.edu/~chet/
