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Currently I using bash.

I am able to calculate only one echo but I am not able to sum up the whole thing. Inside the echo itself has a variable which arises to different value.

#!/bin/bash
for digit in $(seq 1 10)
do
if ping -c1 -w2 192.168.1.$digit &> /dev/null
then
echo "192.168.1.$digit is UP"
else
echo "192.168.1.$digit is DOWN"
fi
done

Dear Sir,

May I know how do I go about adding the following feature into the script below:

When user enter values other than 1,2,3,4,

a) Message “Wrong entry !!! Pls select 1,2,3 or 4” is...