基本用法
# Copy remote file to local dir
scp user@remotehost.com:/remote/path/to/foobar.md /local/dest
# Copy local file to remote dir
scp foobar.md user@remotehost.com:/remote/dest
# Key files can be used (just like ssh)
scp -i my_key.pem foobar.md user@remotehost.com:/remote/dest