定期删除Hdfs文件脚本

#!/bin/bash
usage="$0 Usage: xx [days]"

if [ ! "$1" ]
then
  echo $usage
  exit 1
fi

Now=$(date +%s)
./hadoop fs -ls -r xxxx路径 | while read f; do
  #取文件串中的日期信息
  dir_date=`echo $f | awk '{print $6}'`
  difference=$(( ( $Now - $(date -d "$dir_date" +%s) ) / (24 * 60 * 60 ) ))
  if [ $difference -gt $1 ]; then
    #echo $f;
    dir=`echo $f | awk '{print $8}'`
    echo $dir >> ./toDelete.txt;
    ./hadoop fs -rm -r $dir;
  fi
done