Parse CSV in bash and assign variables

Question

I have a csv of the format (Working on Bash on linux)

DN , MAC , Partition ,  

123 , abc , xyz  
321 , asd , asd 

I am able to parse it u

Answer 1

Using awk :

read -p "Gimme the DN integer >>> " i
awk -v i=$i -F' , ' '
    NR>1{
        dn[NR]=$1
        mac[NR]=$2
        partition[NR]=$3
    }
    END{
        for (a=2; a<=NR; a++)
            if (i == dn[a])
                print dn[a], mac[a], partition[a]
    }
' file.txt