#!/bin/sh
# Scriptname: do_square
function square {
sq=`expr $1 \* $1`
echo "Number to be squared is $1."
echo "The result is $sq "
}
echo "Give me a number to square. "
read number
#value_returned=`square $number` # Command substitution
square $number
#echo 'the value_returned is :' $value_returned
echo 'sq is:' $sq
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