This is correct behavior (from what I've known). The variables in the loop
are defined as temporary variables.. they have scope limited to the loop.
> Is the below expected behavior? or bug? Values assigned to variables
> within the loop, are not visible outside the loop. Using something
> like 'while true' works as I would expect.
>
>
> #!/bin/bash
> ## script: testing
> ## test variable visibility
>
> num=0
> echo 1 > tmp
>
> cat tmp |while read line ; do
>
> num=1
> echo $num
>
> done
>
> echo $num
>
>
> #--- eof testing
>
>
> [hal@feenix hal]$ testing
> 1
> 0
>
>
> [hal@feenix hal]$ bash -version
> GNU bash, version 2.04.11(1)-release (i386-redhat-linux-gnu)
> Copyright 1999 Free Software Foundation, Inc.
>
>
>
>
>
--
-Statux
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