SPUG: Multiple uses of <STDIN> in a script?

[Kevin Fink]

On Fri, 15 Oct 1999, Tim Maher/CONSULTIX wrote:

> What exactly do you mean by "xargs interferes with STDIN"?  The only
> drawback I see is that "find . -print | xargs perl_script_taking_args"
> would execute an unpredictable number of separate instances of the
> perl script (each being invoked with the maximum permitted number of
> arguments), which might be less desirable than a single instance reading
> an "infinite" amount of pipeline input.  However, in cases like
> 	find . -print | xargs chmod o-r
> this issue of separate instances being run is of no concern whatsoever!

The -n option to xargs will take care of that problem:

find . -print | xargs -n1 perl_script_takingargs

(However, I agree that it's better to just fix the Perl script.)

Kevin

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