10进制转换为2,8,16进制.[bash]

#!/bin/bash

echo "1] 10==>2 2] 10==>8 3] 10==>16 4] exit"

while true

do

echo -n "Input your choice:";read choice

case $choice in

1)

echo -n "Input a dec number:"

read i1

echo "$i1==`echo "obase=2;$i1"|bc`";;

2)

echo -n "Input a oct number:";read oct

echo "$oct==`echo "obase=8;$oct"|bc`";;

3)

echo -n "Input a ox number;";read ox

echo "$ox==`echo "obase=16;$ox"|bc`";;

4) exit 1;;

*)

echo "Input error!"

exit 1;;

esac

done