Question

DOS FTP Script

Asked by: ecfarro

A file is placed daily on a remote server. The name of the file is YYYYNNNxxxxxxx where YYYYNNN is the julian date of the file (e.g. 2009148=May 28, 2009) and xxxxxxx is a sequence number. To download this file I need to do the following;

CMD
FTP
Open xxx.xxx.xxx.xxx
Userid
Password
and use get %SenderId%APRF YYYYNNNxxxxxxx

I need a DOS Script to do this automatically once a day. But if the file already exist on my server, it shouldn't be downloaded.

Can someone help me out with this?

Thanks.
Errol

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Asked On
2009-05-28 at 12:19:27ID24446337
Topic

MS DOS

Participating Experts
3
Points
500
Comments
7

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Answers

 

by: renazonsePosted on 2009-05-28 at 12:56:44ID: 24497256

Create a text file named download.ftp with these contents:

username
password
binary
get %SenderId%APRF YYYYNNNxxxxxxx
quit

Create a another text file called download.bat:

@echo off
if exist "%SenderId%APRF YYYYNNNxxxxxxx" (
      goto EXIT
      ) else (
      goto DOWNLOAD
      )

::DOWNLOAD
FTP -s:download.ftp hostname.com

::EXIT
exit

Create a scheduled task to run the script...the syntax may not work perfectly for the .ftp file if it's not a Microsoft FTP but there's a workaround.

 

by: ecfarroPosted on 2009-05-28 at 13:13:08ID: 24497391

Thanks for your quick response. Before I try this out I have another question about the file name to download;

I know the YYYYNNN part of the file but I don't know the sequence number (xxxxxxx). The will be only ONE file that starts with a specifc YYYYNNN (e.g. 2009148xxxxxxx). Does the get command accept wild cards? Can I do for instance;
get %SenderId%APRF YYYYNNN.*

Thanks.

 

by: renazonsePosted on 2009-05-28 at 13:17:07ID: 24497427

in this case you would have to set it to download multiple files using mget %SenderId%APRF YYYYNNN.*

assuming there's only 1 file with that prefix in the name? Otherwise, it may just pull the first one it sees if using just "get" as opposed to "mget"...they do accept wildcards though.

 

by: QlemoPosted on 2009-05-28 at 14:54:13ID: 24498207

Add prompt command in ftp script when using mget, or use -i option of ftp.exe.

The check for local file existance is more complicated then with a fixed name, so you have to change that. Further is the Julian calendar a problem.
And I would combine all in one batch file, as the file name is generated:

@echo off
 
rem --- YYYYNNN generation would come here
set Day=YYYYNN
 
dir "%SenderId%APRF %Day%*" /s/b | findstr APRF >nul || (
  echo username
  echo password
  echo binary
  echo prompt
  echo mget "%SenderId%APRF YYYYNNNxxxxxxx"
  echo quit
) | ftp -i -v hostname
 

                                              
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by: QlemoPosted on 2009-05-28 at 15:24:27ID: 24498397

If you want the Julian date generated from actual date, see the following code. After execution, the var jd contains the Julian date. The leap year rules should be sufficient until 2399.
BTW, in above code I forgot the replace YYYYNN, but I guess you get the figure. In code below it's correct.

@echo off
setlocal EnableDelayedExpansion
call :JulianDate
 
dir "%SenderId%APRF %jd%*" /s/b | findstr APRF >nul || (
  echo username
  echo password
  echo binary
  echo prompt
  echo mget "%SenderId%APRF %jd%xxxxxxx"
  echo quit
) | ftp -i -v hostname
 
exit /b
 
:JulianDate
set days= 0 31 28 31 30 31 30 31 31 30 31 30 31
 
REM Date format is ddd mm/dd/yyyy  with delimiter and ddd arbitrary.
set y=%date:~-4%
set d=%date:~-7,2%
set m=%date:~-10,2%
 
set /A m= "(m-1)*3"
set jd=%d%
for /L %%D in (0,3,%m%) do set /a jd += !days:~%%D,3!
if %m% GEQ 2 (
  set /A leapf=!y! %% 4
  if !leapf! EQU 0 if not !y:~-2! == 00 set /A jd += 1
)
set jd=00!jd!
set jd=!y!!jd:~-3!
                                              
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by: t0t0Posted on 2009-05-28 at 16:52:31ID: 24499039

Nice one Qlemo.....

 

by: QlemoPosted on 2009-05-30 at 03:58:48ID: 24508571

Slight improvement, adding days in one go instead of using for loop.

@echo off
setlocal EnableDelayedExpansion
call :JulianDate
 
dir "%SenderId%APRF %jd%*" /s/b | findstr APRF >nul || (
  echo username
  echo password
  echo binary
  echo prompt
  echo mget "%SenderId%APRF %jd%xxxxxxx"
  echo quit
) | ftp -i -v hostname
 
exit /b
 
:JulianDate
set days=+31+28+31+30+31+30+31+31+30+31+30+31
 
REM Date format is ddd mm/dd/yyyy  with delimiter and ddd arbitrary.
set y=%date:~-4%
set d=%date:~-7,2%
set m=%date:~-10,2%
 
set /A m= "(m-1)*3"
set /A jd=%d% !days:~0,%m%!
if %m% GEQ 2 (
  set /A leapf=!y! %% 4
  if !leapf! EQU 0 if not !y:~-2! == 00 set /A jd += 1
)
set jd=00!jd!
set jd=!y!!jd:~-3!

                                              
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