scp命令的问题

rsa

Unable to negotiate with 192.168.20.10 port 22: no matching host key type found. Their offer: ssh-rsa
scp: Connection closed

手动指定加密方式为rsa

scp -o HostKeyAlgorithms=ssh-rsa

sftp不支持

sh: /usr/libexec/sftp-server: No such file or directory
scp: Connection closed

openssh9.0之后默认使用sftp传输文件，如果目标机器不支持该服务就会报这个错误

可以通过-O大o解决，强制使用scp协议

scp -O

#例子
scp -o HostKeyAlgorithms=ssh-rsa -O **.txt root@****:/home