#!/bin/bash
#summing sizes by converting to an array and using the array index
TOT=0
for FILE in $@
do
  if [[ -x $FILE  && -f $FILE ]]
  then
    ADET=( `ls -l $FILE` )
    TOT=$(( $TOT + ${ADET[4]} ))
    echo $FILE ${ADET[4]}
    ((CNT++))
  fi
done
echo $TOT