从服务器里下载一个RPM, 下载完成后安装 可一直提示rpmReadSignature 错误，导致无法安装。 原来只要在 get 之前使用一个 binary 指令就可以解决。
报错信息如下：
[root@uga-hotel ~]# rpm -ivh android-tools-20130123git98d0789-5.el7.x86_64.rpm 错误：android-tools-20130123git98d0789-5.el7.x86_64.rpm：rpmReadSignature 函数执行失败：region trailer: BAD, tag 15872 type 2047 offset 28672 count 4096 错误：不能安装 android-tools-20130123git98d0789-5.el7.x86_64.rpm
解决方法如下：
[root@uga-hotel ~]# ftp 192.168.32.205 Connected to 192.168.32.205 (192.168.32.205). 220-FileZilla Server version 0.9.43 beta 220-written by Tim Kosse (tim.kosse@filezilla-project.org) 220 Please visit http://sourceforge.net/projects/filezilla/ Name (192.168.32.205:root): a 331 Password required for a Password: 230 Logged on Remote system type is UNIX. ftp> binary 200 Type set to I ftp> cd wangjc 250 CWD successful. "/wangjc" is current directory. ftp> ftp> get android-tools-20130123git98d0789-2.el6.x86_64.rpm local: android-tools-20130123git98d0789-2.el6.x86_64.rpm remote: android-tools-20130123git98d0789-2.el6.x86_64.rpm 227 Entering Passive Mode (192,168,32,205,226,24) 150 Opening data channel for file download from server of "/wangjc/android-tools-20130123git98d0789-2.el6.x86_64.rpm" 226 Successfully transferred "/wangjc/android-tools-20130123git98d0789-2.el6.x86_64.rpm" 124880 bytes received in 2.5 secs (49.98 Kbytes/sec) ftp>
