putty下载linux文件到本地windows

1. psftp -l root -pw password -P port host-ip
2. -l 用户名  -pw 密码
3. psftp> help
   ! run a local command
   bye finish your SFTP session
   cd change your remote working directory
   chmod change file permissions and modes
   close finish your SFTP session but do not quit PSFTP
   del delete files on the remote server
   dir list remote files
   exit finish your SFTP session
   get download a file from the server to your local machine
   help give help
   lcd change local working directory
   lpwd print local working directory
   ls list remote files
   mget download multiple files at once
   mkdir create directories on the remote server
   mput upload multiple files at once
   mv move or rename file(s) on the remote server
   open connect to a host
   put upload a file from your local machine to the server
   pwd print your remote working directory
   quit finish your SFTP session
   reget continue downloading files
   ren move or rename file(s) on the remote server
   reput continue uploading files
   rm delete files on the remote server
   rmdir remove directories on the remote server

将远程当前工作目录文件sourcefile.txt下载到本地当前工作目录中：

1. psfp> get filename

将本地当前工作目录文件sourcefile.txt上传到远程当前工作目录中：

1. psftp> put  filename