steveo@xxxxxxxxxxx ("Steven W. Orr") writes:
> Just be careful with this construct. It may do what you want but be aware
> of what it won't do:
>
> cnt=0
> find | while read foo
> do
> echo "File name $cnt = $foo"
> cnt=$(( cnt + 1 ))
> done
> echo $cnt
>
> This will print out an incrementing counter in the loop but it will
> print out a 0 for the final echo. That's because the instance of cnt in
> the loop is in a seperate process from the instance out of the loop. They
> are seperate variables. It's the pipe that creates the child.
Correct if you want to do something like that you need a construct similar
to this one:
cnt=0
find > /tmp/somefile
while read foo
echo "File name $cnt = $foo"
cnt=$(( cnt + 1 ))
done < /tmp/somfile
echo $cnt
--
Mathieu Chouquet-Stringer
"Le disparu, si l'on vénère sa mémoire, est plus présent et
plus puissant que le vivant".
-- Antoine de Saint-Exupéry, Citadelle --
