脚本名：du_folder2.sh
脚本内容：
#!/bin/sh
if [ -z "$1" ];then
echo "no argument";
exit 255
fi
depth_foler()
{
this_dir=`pwd`
source_folder="$1"
source_folder=`echo $source_folder |sed 's#/$##g'`
test_folder="$2"
cd $test_folder
count=0
while [ ! `pwd` = $source_folder ]
do
count=`expr $count + 1`
cd ..
done
cd $this_dir
return $count
}
#echo $?
target_folder="$1"
depth_max=1
for i in `find "$target_folder" -type d` ;do
if [ -d $i -a ! $i = $target_folder ];then
depth_foler "$target_folder" "$i"
retval=$?
if [ $depth_max -lt $retval ];then
depth_max=$retval
fi
# echo "$i --depth: $retval"
fi
done
echo "max depth:$depth_max"
测试：
执行du_folder2.sh ./
结果是指定目录 ./ 的深度
实例：
[root@localhost du_study2]# ./du_folder2.sh /home/whuang/du_study2
max depth:2
[root@localhost du_study2]# du
4
./ccc
4
./test/abc
8
./test
36
.
[root@localhost du_study2]#
说明：使用du 命令可以验证上面脚本的正确性。