ReadFile or ScpGet

[nicobistolfi]

Have you consider adding a new method to copy a file from a remote ssh server to the client?

Could be implemented by adding a method to the MakeConfig struct, names could be ReadFile or ScpGet.

Proposed Method Signature:

func (ssh_conf *MakeConfig) ReadFile(remoteFile string) (io.Reader, error)
// OR
func (ssh_conf *MakeConfig) ScpGet(remoteFile string) (io.Reader, error) 

This method would establish an SSH session, execute the necessary remote command (like cat or internal SFTP/SCP logic), and return an io.Reader.

This pattern would allow handling the output efficiently using standard Go I/O utilities, like copying directly to a local file:

reader, err := ssh.ReadFile("/remote/path/file.dat")
if err != nil { /* ... */ }

// Copy the remote stream directly to a local file
localFile, err := os.Create("/local/path/file.dat")
if err != nil { /* ... */ }
defer localFile.Close()

_, err = io.Copy(localFile, reader)

Happy to do submit PR myself if this is something you'd like to add to the library.

[nicobistolfi]

@appleboy ?