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

you can also try this

file1 stores all the DN for which you want to retrieve the information

#parse.awk

BEGIN { FS="," ; OFS= "\t"}

FNR==NR{ a[$1]; next }

$1 in a { print $1,$2,$3}

call awk -f parse.awk file1 csvfile.csv