linux top结果保存到文本上

[root@web-DB script]# cat top.sh 
# !/bin/bash

today=`date +%Y%m%d%H%M`
yesterday=`date -d "1 day ago" +%Y%m%d`
work_dir="/home/script/"

cd $work_dir
top -b -n1 >> /home/script/dc_top/top_$today.txt
find $work_dir/dc_top/*.txt -mtime +1 | xargs rm -rf

在linux下，将top命令的结果保存到文本上