数据完整保证

1.打包时确认正常
.flag

2.盖戳：指纹

data]# echo 111 >test.txt 
data]# md5sum test.txt 
1181c1834012245d785120e3505ed169  test.txt
data]# md5sum test.txt >zhiwen.log
data]# cat zhiwen.log 
1181c1834012245d785120e3505ed169  test.txt
data]# md5sum -c zhiwen.log 
test.txt: 确定
data]# echo 222 >test.txt 
data]# md5sum -c zhiwen.log 
test.txt: 失败
md5sum: 警告：1 个校验和不匹配

touch /backup/$IP/bak_nfs01_$(date +%F).flag &&\
#创建flag

find /backup/ -type f -name "*.tar.gz"|xargs md5sum
 >/backup/$IP/bak_nfs01_$(date +%F).flag &&\
#采集指纹