[root@bastion-IDC ~]# rpm -Va #注意相关的/sbin,/bin,/usr/sbin,/usr/bin
输出格式说明：
S – File size differs

M – Mode differs (permissions)

5 – MD5 sum differs

D – Device number mismatch

L – readLink path mismatch

U – user ownership differs

G – group ownership differs

T – modification time differs