函数使用示例:
#! /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;;
*) return 2;
esac
done
}
echo "hello wordl $*"
if yes_or_no "$1"
then
echo "Hi $1 ,nicn name"
else
echo "Newver mind"
fi
exit 0