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From: chris on 9 Apr 2010 11:35
Hello.

I have used Gunzip quite a lot before. never had this though.

Have a website that has a large number (tens of thousands) of *CSV.GZ files on it in the form:

http://mySite/myfile1.csv.GZ
gunzip(url, myDesktop)

When I try and use GUnzip I get the below error:

The file works when I go to it in IE (asks me where do I want to save it as usual). The website is username and password protected. When I go download teh files through IE i only have to enter the password once; it then rememebers it from then on.

I do not think GunZip has anyway of supporting password protected websites.

In Matlab->File->Preferences->Web there are settings for password proxies. Could these be used?

If gunzip can not be used, how can I just go to the website in matlab and download the large number of files as gz files and save them to my harddrive? That sounds simple but I cant see any functions to do it with

Many Thanks!!



??? Error using ==> checkfilename>validateFilename at 134
Function GUNZIP was unable to read URL 'http://mywebsite/myFile.CSV.GZ'.

Error in ==> checkfilename at 50
[fullfilename, fid] = validateFilename( ...

Error in ==> gunzip>checkFilesURLInput at 93
[fullFileName, url] = checkfilename(inputFiles{1}, validExtensions, fcnName, ...

Error in ==> gunzip at 59
[files, url, urlFilename] = checkFilesURLInput(files, {'gz'},'FILES',mfilename);
From: Nicholas Kinar on 9 Apr 2010 22:16

> I do not think GunZip has anyway of supporting password protected websites.
>
> In Matlab->File->Preferences->Web there are settings for password
> proxies. Could these be used?
>
> If gunzip can not be used, how can I just go to the website in matlab
> and download the large number of files as gz files and save them to my
> harddrive? That sounds simple but I cant see any functions to do it with
>

Why not write an external shell script (.sh on UNIX or .bat on Windows)
to download the files to a directory using the wget utility? Note that
wget should be on your system if you use Linux; you can download and
build wget for Mac OS X; and if you run Windows, you can obtain the wget
utility through the GnuWin32 project
(http://gnuwin32.sourceforge.net/).

Here are some links detailing how to use wget with a password-protected
site:

http://www.ehow.com/how_2036474_wget-protected-files.html
http://www.cyberciti.biz/faq/wget-command-with-username-password/

You can run the external script using the Matlab 'system' command (run
'help system' at the Matlab command-prompt.

Then you can run gunzip on the files which have been downloaded into the
folder by wget.

HTH



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