新生成密钥的时候，测试密钥配置是否成功，进行下面测试：
tssh@DESKTOP-9LP9IL5 MINGW64 ~/.ssh
$ ssh git@github.com
The authenticity of host 'github.com (192.30.255.112)' can't be established.
RSA key fingerprint is SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8.
Google之后明白，少了一个kNown_hosts文件，本来密钥文件应该是三个，现在是两个，
便报了这样的错误，此时选择yes回车之后，便可，同时生成了缺少了的kNown_hosts文件：
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'github.com,192.30.255.112' (RSA) to the list of kNown hosts.
PTY allocation request Failed on channel 0
Hi sworsman31415926! You've successfully authenticated, but GitHub does not provide shell access.
Connection to github.com closed.
自己再次执行下就可以了。
tssh@DESKTOP-9LP9IL5 MINGW64 ~/.ssh
$ ssh git@github.com
PTY allocation request Failed on channel 0
Hi sworsman31415926! You've successfully authenticated, but GitHub does not provide shell access.
Connection to github.com closed.
test ok
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