reports.sh

#!/bin/bash

LINE_NUMBER=${LINE_NUMBER:-1}
HEADER=""
ERROR_HEADER=("E" "F")
END_FLAG=false

print_message() {
    if [ -n "$MESSAGE" ]
    then
        echo "Message:$MESSAGE"
    fi
}


while read -r LINE;
do
    if [[ $LINE =~ (^[IEF],) ]]
    then
        print_message
        HEADER=${LINE:0:1}
        MESSAGE=""
    fi
    if [[ " ${ERROR_HEADER[@]} " =~ " ${HEADER} " ]]
    then
        MESSAGE="$MESSAGE"$'\n'"$LINE"
    fi
    (( LINE_NUMBER += 1 ))
done <<< "$(sed -n $LINE_NUMBER',$p')"
export LINE_NUMBER=$LINE_NUMBER

print_message
echo $LINE_NUMBER