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#!/bin/sh
yes_or_no () {
echo "Is your name $* ?"
while true
do
echo -n "Enter yes or no: "
read x
case "$x" in
y | yes ) return 0;;
n | no ) return 1;;
* ) echo "Answer yes or no"
esac
done
}
echo "Original parameters are $*"
if yes_or_no "$1"
then
echo "Hi $1, nice name"
else
echo "Never mind"
fi
exit 0