shell case正则匹配

case $BOOLEAN in

　　[yY][eE][sS])

　　echo 'Thanks' $BOOLEAN

　　;;

　　[yY]|[nN])

　　echo 'Thanks' $BOOLEAN

　　;;

　　'T'|'F')

　　echo 'Thanks' $BOOLEAN

　　;;

　　[Tt]ure|[Ff]alse)

　　echo 'Thanks' $BOOLEAN

　　;;

　　*)

　　exit 1

　　;;

esac

====================================

#!/bin/bash
read -p "press some key ,then press return :" KEY
case $KEY in
[a-z]|[A-Z])
echo "It's a letter."
;;
[0-9]) 
echo "It's a digit."
;;
*)
echo "It's function keys、Spacebar or other ksys."
esac