昨日凌晨精神恍惚,误删了在虚拟机中写的程序文件,谷歌度娘数据恢复方法失败,使昨天的工作功亏一篑,幸好程序改动不多。现准备在所有服务器用机制来解决误删问题。这样总比花时间恢复付出的代价小得多把。
脚本说明:
随意用法:rm -rf /data/test* /data/00000 /data/023-rf-r-f /home/steven/dddd /home/steven/ dirdir/ /home/steven/test* ddd
rm -rf *
禁止删除 / 和根下面的重要目录(rm.py中的deny变量内容)
开发平台:CentOS6.2 X86_64
1、编写回收站脚本程序 rm.py
#!/usr/bin/env python
# Linux Recycle
# Author Steven
# Modify -12-18
import time,sys,os,shutil
recy_path = "/data/Recycle/"
now = time.strftime('%Y%m%d_%H_%M_%S',time.localtime(time.time()))
if not os.path.isdir(recy_path):
os.makedirs(recy_path)
para = sys.argv[1:]
if '-f' in para:
para.remove('-f')
if '-r' in para:
para.remove('-r')
if '-rf' in para:
para.remove('-rf')
deny = ['/usr','/usr/','/var','/var/','/root','/root/','/etc','/etc/','/home','/home/','/proc','/proc/','/boot','/boot/','/bin','/bin/','/sbin','/sbin/','/lib','/lib/','/
lib64','/lib64/','/']
for p in tuple(para):
if p in deny:
para.remove(p)
print "Dangerous command: %s" % p
if not para:
sys.exit('Nothing to run.')
for f in para:
try:
if '/' not in f:
recy_file = "%s/%s_%s" % (recy_path,now,f)
shutil.move(f,recy_file)
else:
path = os.path.dirname(f)
file = os.path.basename(f)
if file == "":
file = path.split('/')[-1]
recy_file = "%s/%s_%s" % (recy_path,now,file)
shutil.move(f,recy_file)
except Exception,e:
print e
提示:deny 列表中包含的是禁止删除的目录或文件,可以根据自己的需要来增减。
2、其他步骤
chmod 755 /bin/rm.py
chmod 777 /data/Recycle 支持一般用户rm
echo "alias rm='/bin/rm.py'" >> /etc/bashrc
source /etc/bashrc 回收站生效
3、删除文件测试
rm /root/text.txt
此时,text.txt文件就会被mv 到 回收站目录 /data/Recycle
远程脚本调用时,须用全路径:/bin/rm.py
4、删除回收站文件
/bin/rm -rf /data/Recycle/text.txt
5、回收站机制是为了解决不小心误删问题,如果确定某个文件永久删除则直接删除
/bin/rm -rf filename
6、为防止回收站目录遗留文件过多而占用太多的硬盘资源,使用crontab定时删除历史文件
a、编写定时删除回收站文件程序脚本[root@master bin]# cat /root/clean_recycle.sh
#!/bin/sh
# Author Steven
# Modify 1218
if [ `whoami` != 'root' ];then
echo "Must be root run this scripts!!" >> /var/log/messages
exit
fi
dirpath=/data/Recycle/
ago=`date -d "-15 day" +%Y%m%d`
if [ ! -d $dirpath ];then
echo "This path [${dirpath}] not exist, please check." >> /var/log/messages
exit
fi
for i in `ls $dirpath`
do
# Get datestamp and check it. For example: 0304_09_54_25_ld.lock
datestamp=`echo $i | awk -F'_' '{print $1}'`
check=`echo "$datestamp" | grep "^[0-9]\{8\}$"`
if [[ `echo $check` -ne "" ]];then
# Remove old files.
if [ "$datestamp" -lt "$ago" ];then
/bin/rm -rf $dirpath/$i
fi
fi
done
b、添加计划任务
crontab -e
1 5 * * 0 sh /root/clean_recycle.sh
c、给文件加锁,避免被修改。
chattr +i /bin/rm.py
chattr +i /root/clean_recycle.sh
d、回收站内容[root@master ~]# ls /data/Recycle/
1217_19_01_26_ 1217_19_05_48_test33.txt 1217_19_19_30_test0df-.211.txt 1217_19_20_50_test1.txt
1217_19_05_48_ 1217_19_05_48_test3436.txt 1217_19_19_30_test1.txt 1217_19_20_50_test322.txt
1217_19_05_48_000 1217_19_05_48_testdd.txt 1217_19_19_30_test322.txt 1217_19_20_50_test33.txt
1217_19_05_48_0234-f12-rf 1217_19_05_48_testdgg.txt 1217_19_19_30_test33.txt 1217_19_20_50_test3436.txt
1217_19_05_48_dddd 1217_19_05_48_testg.txt 1217_19_19_30_test3436.txt
7、失误是无法避免的,我们猜不到失误会在何时,何地,何种情况下发生。既然有这种因素存在,能用机制解决就用机制解决把。