topic Download files to local server using ftp script based on date. in Operating System - HP-UX

Download files to local server using ftp script based on date.

Gopi Kishore m — Fri, 07 Jan 2011 10:29:57 GMT

Hi,
I have written one ftp script which will download some files from ftp server and scheduled this in cron.
Daily this script will run and download the files to local server.
It is running successfully.

Now the problem is some times the source system is not placing the files in server due to some problem at their end.

As we dont know this our script is downloading the previous day files.

Please let me know how to check the modified date in ftp. So that I will check date then download the file.

Re: Download files to local server using ftp script based on date.

Steven Schweda — Fri, 07 Jan 2011 12:49:42 GMT

> I have written one ftp script [...]

To run on what?

uname -a

> Please let me know how to check the
> modified date in ftp. [...]

Uh, have you considered using a "dir"
("LIST") command?

You might look into wget, particularly its
"--timestamping" ("-N") option.

http://www.gnu.org/software/wget/wget.html

(This wheel has already been invented.)

Re: Download files to local server using ftp script based on date.

James R. Ferguson — Fri, 07 Jan 2011 12:52:04 GMT

Hi Gopi:

You need to look at the manpages for 'ftp(1)'. Therein you will find two options that will assist you:

# modtime remote-file

...which shows the last modification time of remote-file

# newer file-name

...which gets the file only if the modification time of the remote file is more recent that the file on the current system

Regards!

...JRF...

Re: Download files to local server using ftp script based on date.

Steven Schweda — Fri, 07 Jan 2011 13:45:27 GMT

> [...] two options that will assist you:

That depends a bit on the FTP server. One
possible outcome, for example:

ftp> modtime robots.txt
502 MDTM is unimplemented.

But you could get lucky. With my weak
psychic powers, I wouldn't try to guess the
capabilities of "ftp server" "at their end"
without more (that is, some) actual
information.

Re: Download files to local server using ftp script based on date.

Gopi Kishore m — Fri, 07 Jan 2011 15:32:03 GMT

ThankQ JRF... It solved my problem.. :-)

when I am trying to use modtime for directories, I am getting the error
"550 Could not get file modification time."

Is there any way to use for folders as well??

Re: Download files to local server using ftp script based on date.

James R. Ferguson — Fri, 07 Jan 2011 15:48:59 GMT

Hi (again):

> when I am trying to use modtime for directories, I am getting the error "550 Could not get file modification time." Is there any way to use for folders as well??

I don't think so. You could use something like 'dir' to collect a listing (with dates) of the files in a directory and then parse that list, though.

Regards!

...JRF...