command not found

发现yum wget 等命令不可用

rpm -qa | grep yum

使用rpm包进行安装

http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-163.el7.centos.noarch.rpm
cd /usr/bin  
whereis python
vim yum
python-python2.7

其他命令可参考