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File Transfer - Using FTP LFTP commands

FTP

Commands

to resume a single file upload using the built-in ftp command you will need to know how many bytes of the file you have already sent. This should be accessible by using ls. Then you use the following sequence to restart your upload replacing <#> with the number of bytes already sent and <filename> with the filename you are uploading.

restart <#>
put <filename>

If the server allows it you should receive a message such as the following...

350 Restart position accepted (<#>).
150 Ok to send data.

This will resume your upload.

LFTP

Using the LFTP command this allows you to restart a died ftp session

Commands

The following command is the login to the server and go to the folder you are placing the file in

lftp user:pass@host/path/to/folder
lftp user:pass@host/path/to/folder
cd ok, cwd=/path/to/folder  
lftp user@host:/path/to/folder> reput file.ext 
---> TYPE I                                
<--- 200 Type set to I
---> SIZE file.ext
<--- 213 11842837120
---> PASV
<--- 227 Entering Passive Mode (10,211,14,15,220,70).
---- Connecting data socket to (10.211.14.15) port 56390
---- Data connection established
---> ALLO 20769244058
<--- 202 No storage allocation necessary
---> REST 11842837120
<--- 350 Restarting at 11842837120. Send STORE or RETRIEVE to initiate transfer
---> STOR file.ext
<--- 150 Opening BINARY mode data connection for file.ext
`file.ext' at 6756302848 (32%) 31.50M/s eta:7m [Sending data]   

This command is to restart the failed FTP replace the "file.txt" with your file

reput file.txt

Adapted from a guide here, something like this should do the trick:

#!/bin/bash
HOST='address.co.uk'
USER='myuser'
PASS='mypass'
TARGETFOLDER='/public_html/java/desktop/'
SOURCEFOLDER='deploy/'

lftp -f "
open $HOST
user $USER $PASS
lcd $SOURCEFOLDER
mirror --reverse --delete --verbose $SOURCEFOLDER $TARGETFOLDER
bye
"

I'd suggest you'd do it without the --delete until you're sure you've got the arguments right!

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