ssh-keygen -t rsa -P ""
scp -P 9832 /root/.ssh/id_rsa.pub renguoqiang@xxx.xxx.xxx.xxx:/tmp
scp -P 9832 /root/.ssh/id_rsa.pub renguoqiang@xxx.xxx.xxx.xxx:/tmp
cd /tmp
cat .ssh/authorized_keys
cat id_rsa.pub >> .ssh/authorized_keys
sudo /bin/cp /tmp/id_rsa.pub /root
cd /root
cat .ssh/authorized_keys
cat id_rsa.pub >> .ssh/authorized_keys
结果:未生效!