shell屏幕菜单设计

#!/bin/sh
tput init
MYDATE=`date +%D`
colour()
{
	case $1 in
	balck_green)
		echo ''
		;;
	black_yellow)
		echo ''
		;;
	black_white)
		echo ''
		;;
	black_cyan)
		echo ''
		;;
	black_red)
		echo ''
		;;
	esac
}

xy()
{
	#_R=row, _C=colnum
	_R=$1
	_C=$2
	_TEXT=$3
	tput cup $_R $_C
	echo -n $_TEXT
}

center()
{
	_STR=$1
	_ROW=$2
	LEN=`echo $_STR | wc -c`
	COLS=`tput cols`
	HOLD_COL=`expr $COLS - $LEN`
	NEW_COL=`expr $HOLD_COL / 2`
	tput cup $_ROW $NEW_COL
	echo -n $_STR
}

tput clear
colour red_yellow
xy 2 3 "USER: $LOGNAME"
colour balck_cyan
center "ADD A NEW WARP DRIVE TO A STAR SHIP" 3
echo -e "\f\f"
center "____________________________________________" 4

colour black_yellow
xy 5 1 "_______________________________________________________________________________"
xy 7 1 "_______________________________________________________________________________"
xy 21 1 "_______________________________________________________________________________"
center "Star Date $MYDATE" 22
xy 23 1 "_______________________________________________________________________________"

colour black_green
xy 6 6 "Initials : "
read INIT
xy 8 14
echo -n "Security code No:        :"
read CODE
xy 10 14
echo -n "Ship's Serial No:        :"
read SERIAL
xy 12 14
echo -n "Is it on the Port Side :"
read PORT

colour red_yellow
center "Save This Record [Y..N]: " 18
read ans
colour black_white