code: public void put(String localFile, String remoteTargetDirectory) throws IOException {
          put(new String[]{localFile}, remoteTargetDirectory, "0600");
      }
docs: Copy a local file to a remote directory, uses mode 0600 when creating
  the file on the remote side.
  
  @param localFile             Path and name of local file.
  @param remoteTargetDirectory Remote target directory.
  @throws IOException