On 22 May, George Vieira wrote:
> Simple script problem which I don't know around.
>
> For some reason I can't get any variables inside a do/done loop to be seen
> outside the loop..eg.
>
> #!/bin/bash
>
> cat /var/log/blahblah.log | while read a
> do
> LINE="Hello"
> export LINE <- even this doesn't work...????
> exit 0
> done
> echo $LINE
>
>
> LINE returns empty... any ideas why and how around this. I need the th value
> outside the loop...
Because of the pipe, the while is run in a separate shell that's forked
off, so LINE hasn't been set in the parent shell.
You should read the file directly, not via a pipe.
while read a
do
...
done < /var/log/blahblah.log
luke
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