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Perhaps consider breaking your code up and having a function like this:-#!/bin/ksh
# My code does backups
#

Get_backup_type ()
{
j=0
while [ $j == 0 ]
do
read type?"What level of...

So, is ${DATABASES set up as multiple items? You have a while true loop that you are trying to exit with a break and that's where it is getting confused.

Can you try a variation to...

You have a space in your read command between the yn? and the quoted prompt. Take this out. I get the following output to the code as posted:-
Do You Wish To Take Database Backup ?? y
YES take...

What shell are you in? For me, I'm usually Korn shell, ksh so I would craft is like this:-while true ;do
read yn?"Do You Wish To Take Database Backup ?? "
case $yn in
[Yy]*) echo " YES take...