count and compare nm command output

nmcmp.sh

#!/usr/bin/env bash

#usage: 
#first step: generate the output 
#    nm -S --size-sort xxx1 > nm_output1
#    nm -S --size-sort xxx2 > nm_output2
#second step: generate the count or diff
#   ./nmcmp.sh nm_output1 nm_output2
#   ./nmcmp.sh -d nm_output1 nm_output2    ##this will output with diff format. 


read -d '' awkscript << 'EOF'
{

	if(NF == 1)
		next
	$5 =sprintf("%d","0x"$2)
	Res[$3] += $5
}

END{

	for(key in Res)
	{
	  printf("%s:%d\n",key, Res[key])
	  count+=Res[key]
	}
	printf("total:%d\n",count);
}
EOF

ask() {
    local answer green color_off
	green="\033[32m"
	color_off="\033[0m"

	args=$(printf '%q ' "$@")
	printf '%s: Do you want to run "%b%s%b"? [y/N] ' "$0" "$green" "${args% }" "$color_off"
	read -s -n1 answer
	echo

	case $answer in
	    ([Yy]) "$@";;
    esac
}

i=0
flag=0
moreThanTwo=1

while (( "$#" )); do
  if [[ $1 = '-d' ]]; then
	flag=1
	shift
	continue
  fi

  if [ -f "$1" ] ; then
      tmpfile="nmDiff_""$1""_""$i"
      printf "file %s detail: \n" "$1"  > "$tmpfile"
      printf "%s\n" "===========================" >> "$tmpfile"
      awk  --non-decimal-data "$awkscript" "$1" | sed 's/n/\n/g' | sort >> "$tmpfile"
      printf "%s\n\n" "============================" >> "$tmpfile"
      shift
      ((i+=1))
  else
	  printf '%s is not exsist\n' "$1"
	  echo
	  moreThanTwo=0
	  shift
  fi
done

if (($flag == 1 && $moreThanTwo == 1)); then
  diff nmDiff* -y -W 80 
else
  cat nmDiff*
fi

ask rm -rf nmDiff*