gistfile1.txt

#!/bin/bash

set -euxo pipefail

# 0  - Processed record. No more to process
# 20 - Processed record. More to process
# Other - Unspecified error


# Process one record
migrate_one_record() {
    set +e # Don't fail on errors immediately in this function.
    (exit $1) # Simulate a failure based on the function parameter
    local function_exit_code=$?
    return $function_exit_code
}


echo "Start"

for i in 1 2 3 5 20 0 # This is just to simlate exit codes from a program
do
   migrate_one_record $i
   loop_exit_code=$?
   
    case "$loop_exit_code" in

    0)  echo "Normal exit. Nothing more to process. $loop_exit_code"
        ;;
    20)  echo "Normal exit. More to process. $loop_exit_code"
        ;;
    *) echo "Error $loop_exit_code "
    ;;
    esac

done

echo "Finished"