生成 SSH 公钥

1、通过命令 ssh-keygen 生成 SSH Key：

ssh-keygen -t ed25519 -C eap@gitee.com

-t key 类型
-C 注释（C大写）

PS C:\Windows\System32> ssh-keygen -t ed25519 -C eap@gitee.com
	Generating public/private ed25519 key pair.
	Enter file in which to save the key (C:\Users\23731/.ssh/id_ed25519):
	Enter passphrase (empty for no passphrase):
	Enter same passphrase again:
	Your identification has been saved in C:\Users\23731/.ssh/id_ed25519
	Your public key has been saved in C:\Users\23731/.ssh/id_ed25519.pub
	The key fingerprint is:
	SHA256:V3h60I/rwqa08jO1pxSFjc0f1YWRg5Z6wXX9/XWynu8 eap@gitee.com
	The key's randomart image is:
	+--[ED25519 256]--+
	|           . +o+B|
	|           O* +oo|
	|          =oO...o|
	|          .*.+..=|
	|        S +.o oo+|
	|         ..o .. .|
	|        .o.... . |
	|      ..oo=.. o  |
	|       o+=.+.  oE|
	+----[SHA256]-----+
	PS C:\Windows\System32>

找到公钥打开复制

在Ubuntu内粘贴公钥

user@user-virtual-machine:~$ ls -al
total 108
drwxr-xr-x 20 user user 4096 3月  24 10:32 .
drwxr-xr-x  3 root root 4096 3月   4 16:00 ..
-rw-------  1 user user 3328 3月  18 11:43 .bash_history
-rw-r--r--  1 user user  220 3月   4 16:00 .bash_logout
-rw-r--r--  1 user user 3799 3月   9 11:15 .bashrc
drwx------ 15 user user 4096 3月  24 15:55 .cache
drwx------ 11 user user 4096 3月  16 10:21 .config
drwxr-xr-x  2 user user 4096 3月   4 16:35 Desktop
drwxr-xr-x  2 user user 4096 3月   4 16:35 Documents
drwxrwxr-x  3 user user 4096 3月  23 16:57 .dotnet
drwxr-xr-x  2 user user 4096 3月   4 16:35 Downloads
drwxrwxr-x  8 user user 4096 3月  13 16:41 esp
drwxrwxr-x  5 user user 4096 3月   7 17:27 .espressif
-rw-rw-r--  1 user user  122 3月   6 09:51 .gitconfig
drwx------  3 user user 4096 3月   4 18:01 .gnupg
drwxr-xr-x  3 user user 4096 3月   4 16:35 .local
drwxr-xr-x  2 user user 4096 3月   4 16:35 Music
drwxr-xr-x  2 user user 4096 3月   4 16:35 Pictures
-rw-r--r--  1 user user  807 3月   4 16:00 .profile
drwxr-xr-x  2 user user 4096 3月   4 16:35 Public
drwx------  3 user user 4096 3月   7 17:31 snap
drwx------  2 user user 4096 3月   4 18:01 .ssh
-rw-r--r--  1 user user    0 3月   5 11:49 .sudo_as_admin_successful
drwxr-xr-x  2 user user 4096 3月   4 16:35 Templates
drwxr-xr-x  2 user user 4096 3月   4 16:35 Videos
drwxr-x---  5 user user 4096 3月  24 16:24 .vscode-server
-rw-rw-r--  1 user user  183 3月  23 16:57 .wget-hsts
-rw-------  1 user user   66 3月  24 10:32 .Xauthority

user@user-virtual-machine:~$ cd .ssh/
user@user-virtual-machine:~/.ssh$ ls
user@user-virtual-machine:~/.ssh$ touch ~/.ssh/authorized_keys
user@user-virtual-machine:~/.ssh$ ls
authorized_keys
user@user-virtual-machine:~/.ssh$ chmod 600 ~/.ssh/authorized_keys
user@user-virtual-machine:~/.ssh$ vim authorized_keys

vim打开文件，如果没有vim，下载vim。

不习惯vim可直接用vscode远程打开，粘贴公钥。

vim基本命令：强制退出当前文件
按下 Esc 键，确保处于普通模式。
输入以下命令并按回车： :q! 作用：忽略所有未保存的修改，直接退出当前文件。:wq 作用保存退出。

最后重新打开vscode验证免密登录服务器