findfiles.sh

#!/bin/bash
inputfile="$1"
while read -r line; do
    #set migrate to a non-zero/one value
    migrate=2

    #regex patterns to use later
    migpattern='^MIG\s?-.*'
    # Match lines beginning with MIG(case sensitive), optional whitespace, then a hyphen, then anything else to the end of the line
    notmigpattern='^NOT\s?-.*'

    # Use / as a field separator and break into an array called array
    IFS='/' read -r -a array <<< "$line"

    # Iterate through each element in the array
    for i in "${!array[@]}"
    do
        if [[ "${array[i]}" =~ $migpattern ]]; then
            migrate=1
        elif [[ "${array[i]}" =~ $notmigpattern ]]; then
            migrate=0
            #if we dont want to have "NOT" override all subsequent "MIG"s, comment out break
            break
        fi
    done

    if [ $migrate -eq 0 ]; then
        echo $line >> "/tmp/notmigrate$1"
        printf "nomigrate\t$line\r\n"
    elif [ $migrate -eq 1 ]; then
        echo $line >> "/tmp/migrate$1"
        printf "migrate\t\t$line\r\n"
    else
        # Lines not matching either regex get dumped unto an untagged file
        echo $line >> "/tmp/untagged$1"
        printf "untagged\t$line\r\n"
    fi
done < "$inputfile"
echo "output files:"
echo "/tmp/migrate$1"
echo "/tmp/notmigrate$1"
echo "/tmp/untagged$1"