Re: while read subcommand problem

[Paul Jarc]

Andreas Schwab <schwab@suse.de> wrote:
> prj@po.cwru.edu (Paul Jarc) writes:
>> while ...; do var=...; done <<EOT
>> $(generate-input-for-while)
>> EOT
>> use "$var"
>
> This has the disadvantage that generator and consumer no longer run
> concurrently.  Process substitution does not have this problem.

True.  The here-document with command substitution also removes any
trailing newlines from the output, then adds back just one newline.
But it is more portable to other shells.


paul