Ask for Version of Script on Server w/o download


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# 1  
Power Ask for Version of Script on Server w/o download

Hello!

I'm sorry if my question is kind of a noob question, but I'm searching for a way to "ask" a Server for the Version of a File. The problem is I have several clients asking every hour or so for the newest version of the file, so if I'm just downloading a md5sum or so I'm getting a lot of Traffic... Is there a possibility to get something (w/o downloading a file) from the server to determine the version? Like the Server passes a variable or a string to the client.

Thanks for replys and sorry for my bad english! Smilie

ps: I'm sorry if the question is answered by googling, but I couldn't find anything, mostly because I don't really know what to search for ^^'

Last edited by al0x; 11-09-2010 at 08:36 AM..
# 2  
What kind of server.
# 3  
A normal ftp server
The thing is, I don't really want to download something every hour, a string given upon a reqest would be much easier to handle.
# 4  
Store an md5sum in a different file and have your clients check that, but it sounds like you already guessed that and are looking for something automatic. FTP doesn't have that, no. FTP is very simple and stupid.
This User Gave Thanks to Corona688 For This Post:
# 5  
Quote:
Originally Posted by Corona688
Store an md5sum in a different file and have your clients check that, but it sounds like you already guessed that and are looking for something automatic. FTP doesn't have that, no. FTP is very simple and stupid.
What about HTTP? It's possible to access the server via HTTP, I'm just downloading the files via FTP ^^
Oh and thanks for the quick replys! SmilieSmilie
# 6  
HTTP doesn't have checksums, but it does have timestamps.

Do your clients have wget?

Code:
$ wget -N localhost/~tyler/hugefile
--2010-11-09 10:39:01--  http://localhost/~tyler/hugefile
Resolving localhost... 127.0.0.1
Connecting to localhost|127.0.0.1|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 16777216 (16M) [text/plain]
Saving to: `hugefile'

100%[======================================>] 16,777,216   106M/s   in 0.2s

2010-11-09 10:39:01 (106 MB/s) - `hugefile' saved [16777216/16777216]

$ wget -N localhost/~tyler/hugefile
--2010-11-09 10:39:03--  http://localhost/~tyler/hugefile
Resolving localhost... 127.0.0.1
Connecting to localhost|127.0.0.1|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 16777216 (16M) [text/plain]
Server file no newer than local file `hugefile' -- not retrieving.

This User Gave Thanks to Corona688 For This Post:
# 7  
This looks just perfect Smilie
Didn't knew wget can check for newer file, should have read the manpage better >_>
Anyways, thanks a lot Smilie
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