新建一个配置文件 vim /tmp/sshd-test-config
Port 2222
PermitRootLogin yes
PasswordAuthentication yes
UsePAM no
PermitEmptyPasswords no
Subsystem sftp /usr/lib/openssh/sftp-server
运行下面的命令启动一个独立的sshd进程
/usr/sbin/sshd -f /tmp/sshd-test-config -d -p 2222
打开另外一个窗口进行调试
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