试试用这个......
#!/bin/bash
HOST='172.13.17.11'
USER='username'
PASS='password'
TARGETFOLDER='/mnt/htdocs/businessfiles/files'
SOURCEFOLDER='/somefolder'
lftp -f "
open $HOST
user $USER $PASS
lcd $TARGETFOLDER
mirror --verbose $SOURCEFOLDER $TARGETFOLDER
bye
"`