Re: Probably very stupid script/bash question

[Bob McGowan]

Michelle Konzack wrote:

Am 2008-03-05 14:13:33, schrieb Brian:

teststring="one two three four five six" { read A B C D E F; } < <( echo "$teststring" ) echo "Data received = $E Bytes"

------------------------ END OF REPLIED MESSAGE ------------------------

This look a little bit weird. Why not use:

----8<--------------------------------------------
read A B C D E F <<EOF
one two three four five six
EOF
----8<--------------------------------------------

and

----8<--------------------------------------------

read A B C D E F <<EOF
$teststring
EOF



no need for a stupid resources eating subschell expecialy on a ARM.

:-)

teststring="one two three four five six" echo "Data received = $E Bytes" ----8<--------------------------------------------

--
Bob McGowan

Actually, the example code is a trivial example used to illustrate how to use "process substitution". A real case might have a series of commands running, or a single large application, etc., from which you want to read the output in some asynchronous way. In some cases, using a here doc would be an option, but in the cases mentioned above, you don't know what the text will be until you fetch it. It's a run time issue.

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