How to use a variable in the name of another variable in bash?

Question

linux

There is a for i in 10 loop.
How can I use a variable whose name depends on $i in it?
Those. there are variables
disk_1
disk_2
and I want to use something like
$disk_$i in the loop

Answer 1

KVM_VM_DISK_SIZE_2='20000'
prefix='KVM_VM_DISK_SIZE_'
i=2
size=$(eval echo "\$$prefix$i")
echo $size

result:
20000

Answer 2

Use array

Answer 3

startandroid.ru/ru
habrahabr.ru/post/164853
habrahabr.ru/post/193122
progbook.ru/android