备份文件
务必备份！最后会用得到！
mkdir -p ~/openssh-bak cp -ar /etc/ssh ~/openssh-bak cp -ar /etc/pam.d ~/openssh-bak
安装依赖
yum install gcc rpm-build openssl-devel pam-devel perl-macros
务必备份！最后会用得到！
mkdir -p ~/openssh-bak cp -ar /etc/ssh ~/openssh-bak cp -ar /etc/pam.d ~/openssh-bak
yum install gcc rpm-build openssl-devel pam-devel perl-macros