#!/bin/bash
#by wang
pwd="/tmp/user13.log"
if [ -f $pwd ]
then
clear=`ls -l $pwd |awk ‘{print $5}‘`
while [ $clear -gt 30000 ]
do
echo "" > $pwd
break
done
fi本文出自 “Steven一直不放弃” 博客，请务必保留此出处http://wsw26.blog.51cto.com/1442148/1769492
原文：http://wsw26.blog.51cto.com/1442148/1769492