使用yum安装任何软件均提示错误
YUM错误：ERROR: XZ COMPRESSION NOT AVAILABLE
解决方案：
[root@centos7 ~]# yum remove epel-release
[root@centos7 ~]# rm -rf /var/cache/yum/x86_64/6/epel/
[root@centos7 ~]# yum clean all然后执行yum操作：成功~
[root@centos7 ~]# yum install lrzsz
Loaded plugins: aliases, fastestmirror, protectbase
Loading mirror speeds from cached hostfile
* base: mirrors.cn99.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
0 packages excluded due to repository protections
Resolving Dependencies
--> Running transaction check
---> Package lrzsz.x86_64 0:0.12.20-36.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
==========
