bash case in

#! /bin/bash

test
function test()
{
printf "input a char:"
read -n 1 a
printf "\n"

case $a in
[967])
	echo '9 or 6 or 7'
	;;
a | A)
	echo 'a | A'
	;;
[0-9])
	echo '0-9'
	;;
[a-z])
	echo 'a-z'
	;;
[A-Z])
	echo 'A-Z'
	;;
*)
	echo 'other'
	;;
esac
}

脚本输出结果：
input a char:9
9 or 6 or 7

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