ssh-copy-id非22端口的使用方法

線上服務器會對ssh服務改爲非22端口，這時候，在服務器之間創建雙機互信的狀況下，若使用ssh-copy-id命令，不通過特定的語法，會報錯。

[root@localhost ~]# ssh-copy-id -i  /root/.ssh/id_rsa.pub  -p 10022 root@*.*.*.*
Bad port 'umask 077; test -d ~/.ssh || mkdir ~/.ssh ; cat >> ~/.ssh/authorized_keys && (test -x /sbin/restorecon && /sbin/restorecon ~/.ssh ~/.ssh/authorized_keys >/dev/null 2>&1 || true)'

對於非22端口狀況下的ssh-copy-id的使用，須要這樣用：

[root@localhost ~]# ssh-copy-id -i  /root/.ssh/id_rsa.pub  '-p 20460 root@*.*.*.*'
Now try logging into the machine, with "ssh '-p 10022 root@*.*.*.*'", and check in:
 
  .ssh/authorized_keys
 
to make sure we haven't added extra keys that you weren't expecting.