update values in .cnf from .csv [closed]

I have the following .cnf

[ policy_match ]countryName     = matchstateOrProvinceName = matchorganizationName    = matchorganizationalUnitName  = optionalcommonName      = suppliedemailAddress            =[ policy_anything ]countryName     = optionalstateOrProvinceName = optionallocalityName        = optionalorganizationName    = optionalorganizationalUnitName  = optionalcommonName      = suppliedemailAddress            =[client]countryName     = stateOrProvinceName = localityName        = organizationName    = emailAddress            =commonName      = 

Here's the csv headers:

userPrincipalName,displayName,surname,mail,givenName

I need to update the emailAddress and commonName value only under [client] section using the .csv file containing UPN and displayName.

I also need to loop values from csv and update one by so giving me the chance to run another script in between to generate a certificate.

I'm not familiar with bash scripting at all, just starting to learn while building a project.

example:

foreach $upn in $csv { update [client].emailAddress = $upn run_cert_creation_script_here}

I'm trying:

sed -i "s/emailAddress.*/emailAddress=$upn/" "$CONFIG_FILE"

but this will update all matching field in the cnf.

Update:

I was able to write this:

#!/bin/bash# Define the CSV and CNF file pathsCSV_FILE="exportUsers_2024-8-8.csv"CNF_FILE="clientX.cnf"# Read the CSV file line by linewhile IFS=',' read -r userPrincipalName displayName _ _do        echo "UPN: $userPrincipalName"        echo "Name: $displayName"        sudo sed -i "52 s/emailAddress.*/emailAddress            = $userPrincipalName/" "$CNF_FILE"         sudo sed -i "53 s/commonName.*/commonName              = ""\"$displayName\"/" "$CNF_FILE" done < "$CSV_FILE"