How to loop through multiple comma separated strings in shell

I’m trying to loop through multiple comma separated strings with same number of commas in the string.

I’ve tried the below snippet but it doesn’t return anything.

#!/bin/bash
    
ip1=“Ok1,ok2,ok3”
    
ip2=“ty1,ty2,ty3”
    
for i in ${ip[@]//,/} 
do 
        echo $i 
done

Could someone please suggest how I can change this.

>Solution :

Replace the comma-separated string with an array as soon as feasible. If it’s a hard-coded string, that’s trivial:

ip1=(Ok1 ok2 ok3)

If it’s from an external source (say, a command-line argument or read from a file), use read:

ip1s="Ok1,ok2,ok3"
IFS=, read -a ip1 <<< "$ips1"

Once you have an array, you can use array syntax for iteration:

for i in "${ip1[@]}"; do
    echo "$i"
done

If you have multiple arrays you want to iterate in lockstep, you can iterate over the keys of the arrays:

for i in "${!ip1[@]}"; do
  echo "${ip1[i]}"
  echo "${ip2[i]}"
done

(This ignores the possibility of sparse arrays, but you have to work to get those. In practice, arrays with n elements usually have keys 0, 1, … n-1.)