Compare Two Different Files

#!/bin/bash

IFS=$'\n' read -d '' -r -a fileAResource < /tmp/fileA-resource

IFS=$'\n' read -d '' -r -a fileBResource < /tmp/fileB-resource-sco

# FILEA_TOTAL_COUNT holds the total number of resource in FILEA
FILEA_TOTAL_COUNT=0
# FILEA_ORPHANED_COUNT holds the number of orphaned resource
FILEA_ORPHANED_COUNT=0
# FILEA_ORPHANED holds the names of the orphaned resource
FILEA_ORPHANED=()

# FILEB_TOTAL_COUNT holds the total number of resource in FILEB
FILEB_TOTAL_COUNT=0
# FILEB_ORPHANED_COUNT holds the number of orphaned resource
FILEB_ORPHANED_COUNT=0
# FILEB_ORPHANED holds the names of the orphaned resource
FILEB_ORPHANED=()

# Loop through items in fileAResource
for i in "${fileAResource[@]}"; do
  EXISTS_IN_FILEB=$(cat /tmp/fileB-resource | grep "$i")

  # If the string is null (empty)
  if [ -z "$EXISTS_IN_FILEB" ]; then
    FILEA_ORPHANED+=("$i")
    ((FILEA_ORPHANED_COUNT++))
  fi

  ((FILEA_TOTAL_COUNT++))
done

# Loop through items in fileBResource
for i in "${fileBResource[@]}"; do
  EXISTS_IN_FILEA=$(cat /tmp/fileA-resource | grep "$i")

  # If the string is null (empty)
  if [ -z "$EXISTS_IN_FILEA" ]; then
    FILEB_ORPHANED+=("$i")
    ((FILEB_ORPHANED_COUNT++))
  fi

  ((FILEB_TOTAL_COUNT++))
done

if [[ $1 == "fileA-debug" ]]; then
  echo "${FILEA_ORPHANED[@]}"
fi

if [[ $1 == "fileB-debug" ]]; then
  echo "${FILEB_ORPHANED[@]}"
fi

echo "There are $FILEA_ORPHANED_COUNT (out of $FILEA_TOTAL_COUNT) orphaned resource (resource that exist in FILEA but not FILEB)"

echo "There are $FILEB_ORPHANED_COUNT (out of $FILEB_TOTAL_COUNT) orphaned resource (resource that exist in FILEB but not FILEA)"