Variables being worked on inside of loops

yongho · #1 (**permalink**) 06-13-2005

I have a while read loop that reads values inside of a file and then performs an expr operation on each.

Everything works fine, the way it's supposed to but, once the loop is finished, I can not access the variable that I used inside of the loop (but that variable was created outside of the loop).

In other words...

PHP Code:


			
#Init var

myVar=0



while read LINE

do

varInLoop=... #This carries an integer

myVar=`expr $myVAR + $varInLoop` #Trying to increment the totals

done



echo "myVar:${myVar}"

The output of that last echo is "myVar:0"
Is this something I'm not allowed to do? I changed the value of the variable I created outside of the loop, from within the loop, but it didn't change after the loop was done, outside.

I tested the loop, and yes, the loop works, the values are there.
Should I just redirect the output to a file and just use the file as my variable?

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