PHWinfo - Afficher un message - Bourne Shell: scope of variables in while loop

26/08/2006, 14h25

For some reason, I am not able to access variables that were changed in a
while loop, after the while loop finishes. For example:

i=0
echo "this is a test" | while read line
do
i = `expr $i + 1`
done
echo $i

-------------------------------
The echo statement prints 0 rather than 1. Does anyone know why?

26/08/2006, 14h25	#1
Doug Ritschel Messages: n/a Hébergeur:	Bourne Shell: scope of variables in while loop For some reason, I am not able to access variables that were changed in a while loop, after the while loop finishes. For example: i=0 echo "this is a test" \| while read line do i = `expr $i + 1` done echo $i ------------------------------- The echo statement prints 0 rather than 1. Does anyone know why?