root@VM-4-9-debian:~# rm Homebrew.sh ; wget https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh ; b
ash Homebrew.sh

root@VM-4-9-debian:~# wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt
-key add -
E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this
 operation

➜  ~ ssh ubuntu@www.cctv3.net
The authenticity of host 'www.cctv3.net (110.42.253.75)' can't be established.
ED25519 key fingerprint is SHA256:1gTaZcgrHg5VDYmQSC+OwD7G/RNHv1HTuB/zYrOt2eM.
This host key is known by the following other names/addresses:
    ~/.ssh/known_hosts:7: 110.42.253.75
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'www.cctv3.net' (ED25519) to the list of known hosts.
ubuntu@www.cctv3.net's password:
Welcome to Ubuntu 18.04.4 LTS (GNU/Linux 4.15.0-213-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Mon Jan 22 19:38:33 CST 2024

  System load:  0.0               Processes:           105
  Usage of /:   4.3% of 98.31GB   Users logged in:     0
  Memory usage: 6%                IP address for eth0: 10.0.4.9
  Swap usage:   0%

 * Strictly confined Kubernetes makes edge and IoT secure. Learn how MicroK8s
   just raised the bar for easy, resilient and secure K8s cluster deployment.

   https://ubuntu.com/engage/secure-kubernetes-at-the-edge

 * Canonical Livepatch is available for installation.
   - Reduce system reboots and improve kernel security. Activate at:
     https://ubuntu.com/livepatch
New release '20.04.6 LTS' available.
Run 'do-release-upgrade' to upgrade to it.


Last login: Mon Jan 22 11:05:47 2024 from 58.60.186.1
To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.