统计文件与文件夹大小信息的shell脚本

#!/bin/bash
#Filename：f_count.sh
usage()
{
     cat <<-EOF
------------------------------------
该脚本用于统计文件/文件夹大小信息
-d 仅显示文件夹信息
-f 仅显示文件信息
-a 统计包括隐藏文件
-A 统计全部信息
------------------------------------
EOF
}
 
caldir(){
 
total1=0
total2=0
exern=
[ $ALL ] && exern="-a"
#find $1 -maxdepth 1 当前文件夹下
for file in `ls $exern $1`
do
     if [ "$file" = "." ];then #去掉 .
        continue
     fi
     if [ "$file" = ".." ];then #去掉 ..
        continue
     fi
     path="$1/$file"
     size=`stat -c %s $path`
     if [ -f $path ];then
         ((total1 =total1 + size))
         [ $FILE ] && echo "$path File Size:$size"
         size=0
     elif [ -d $path ];then
         ((total2 = total2 + size))
         [ $DIR ] && echo "$path Dir Size:$size"
         size=0
     fi
done
[ $FILE ] && echo "$1 Total File Size: $total1 bytes"
[ $DIR ] && echo "$1 Total Dir Size: $total2 bytes"
}
FILE=1
DIR=
ALL=
while getopts dfaA opt
do
     case $opt in
     d)   DIR=1
         FILE=
         ;;
     f)   DIR=
         FILE=1
         ;;
     a)   ALL=1
         ;;
     A)   DIR=1
         FILE=1
         ALL=1
         ;;
     ?)   usage
         ;;
     esac
done
shift $((OPTIND - 1))
for one in "$@"
do
     if [ -f $one ];then
         stat $one
     elif [ -d $one ];then
         caldir $one
     else
         echo "$one is not file and dir."
     fi
done