Small MATLAB Request ... Pleeez HELP OUT !!

[ahmad_abdulghany]

:idea: Hello all ..
I have two problems and i hope i can find solutions for them please try to help me ..
:arrow: I have some files with the same extensions that have periodic file-names ( for esample they are 115 file with names starting from : 4325001.ext through 4325115.ext .. and the problem now that i dont know how can i deal with file-names with matlab to re-name all these files to 001.ext through 115.ext ... I hope you can get the problem and can help ..

:arrow: the second problem : I want to download all the *.ext contents in web pages with periodic names ... i.e. assume for esample the addresses of these pages are like the following :
'http://www.aaa.com/bbb.php/?lw_s=text_b=chapters_id=123001
'http://www.aaa.com/bbb.php/?lw_s=text_b=chapters_id=123002
'http://www.aaa.com/bbb.php/?lw_s=text_b=chapters_id=123003
-------
'http://www.aaa.com/bbb.php/?lw_s=text_b=chapters_id=123234

each page of these pages contain one or more *.ext with non-periodic names at all .. i want to download them making use of Matlab and/or any other download program, but i want this to be in intelligent way not to open the 234 pages one by one and download files in each, this will be very difficult ..

Pleasee notice that i don't understand what is it ment by such internet addres .i.e. i dont know what is the need of '=' , '?' , or '/' and so on .. if you can discuss breifely i will be very happy ..

I hope you can help me to solve such problems as soon as possible ..

Thank you very much ..

 

[thedesolatesoul]

Lets see...
this isnt really complicated...we can do it in a simple m file

lets say u have 115 files...

for I=1:115
copyfile(['abc' num2str(I) '.ext'],[num2str(I) '.ext'])
end

hope this solves your first problem

the other one is quite out of my scope

Best of luck

 

[echo47]

If you are using Windows, maybe you could use the handy GrabURL command-line utility. You can then create a batch file and run it. Example:

graburl [url]https://www.aaa.com/bbb.php/?lw_s=text_b=chapters_id=123001[/url] > 001.ext
graburl [url]https://www.aaa.com/bbb.php/?lw_s=text_b=chapters_id=123002[/url] > 002.ext
graburl [url]https://www.aaa.com/bbb.php/?lw_s=text_b=chapters_id=123003[/url] > 003.ext

I suppose you could even use MATLAB to create and run the batch file.

I'll attach GrabURL 1.05 here because the author's web site is down.

 

[ahmad_abdulghany]

Lets see...
this isnt really complicated...we can do it in a simple m file

lets say u have 115 files...

for I=1:115
copyfile(['abc' num2str(I) '.ext'],[num2str(I) '.ext'])
end

hope this solves your first problem

the other one is quite out of my scope

Best of luck

Thank you for your reply .. but i still don't know how can i use this to re-name files !!! i think you misunderstood my first problem .. my problem is to rename each file to the first few characters of its current name ... e.g. abc01.ext becomes 01.ext ...
I hope you can help more ..
thank you very much

 

[echo47]

First few characters???

for i=1:115
  movefile(['4325' sprintf('%03d',i) '.ext'], [sprintf('%03d',i) '.ext']);
end

4325001.ext becomes 001.ext
4325002.ext becomes 002.ext
etc.

Your question isn't totally clear. I assume you know the first few characters of the filenames, and you know how many files there are. Otherwise you'll need to do something like files=ls; or files=ls('4325*'); or maybe files=dir; and then parse the resulting array of filenames.

 

[ahmad_abdulghany]

First few characters???

for i=1:115
  movefile(['4325' sprintf('%03d',i) '.ext'], [sprintf('%03d',i) '.ext']);
end

4325001.ext becomes 001.ext
4325002.ext becomes 002.ext
etc.

Your question isn't totally clear. I assume you know the first few characters of the filenames, and you know how many files there are. Otherwise you'll need to do something like files=ls; or files=ls('4325*'); or maybe files=dir; and then parse the resulting array of filenames.

I am very happy ... thank you very very much echo47 for your help ..
it worked profissionally ..
I want to learn more about how to deal with files ( copy, move, rename, change extensions, convert between formats , ... etc. ) can you guide me where to do so ?

BR

 

[echo47]

The best source of info is probably MATLAB's built-in help. That's how I found "movefile" - I searched for "rename", and found "movefile" near the top of the list. If you find a topic that's close to what you want, but not quite right, be sure to try the "See Also" links at the bottom of the help page.

 

[ahmad_abdulghany]

Hello echo
I can say that you totally helped me to solve the first problem .. but for the secoond, I still not able to solve it .. can you help to solve ?

Notice that the garbURL program you had attached with your reply can't be downloaded don't know why ...

Also i wanna clearify a simple special case of my second problem ..

If i wanted to download 234 mp3 files from diffrent pages but all starting with the same download link and files have assending periodic naming from 001.mp3 to 234.mp3 , i generated a text file using matlab containing list of download links of these files ( e.g. from 'htttp://www.aa.com/bb/files/001.mp3' through the end )
and this was so easy as you can see to import this list via any download program such as Download Accelerator ...

But the current problem differs in a point that is the download links are the same in the first part but the file name is random names ... such as :
'htttp://www.aa.com/bb/files/file1.mp3'
'htttp://www.aa.com/bb/files/test_file.mp3'
'htttp://www.aa.com/bb/files/lecture.mp3'
'htttp://www.aa.com/bb/files/final.mp3'

and number of file may be large and to download anyone of them i have to open certain page that contains this file download link..

I hope you could get my problem and be able to find a suitable solution ..

Thanks in advanse...
Ahmad

 

[echo47]

It would be nice to be able to download http://www.aa.com/bb/files/*.mp3, but that will never work on the web.

If you go to http://www.aa.com/bb/files/, does it give you a directory listing, or does it give you a web page, or does it say "directory list denied"? If it gives you a directory listing, then you can copy what you see into a text editor, and modify it into a download script. If it gives you a web page that contains links to all the files, then copy the web page source code into a good text editor that can extract all the *.mp3 strings, and then create your download script. If you get "directory denied" messages, then I don't know how to find the names of the files.

Another possibility is to use a web site ripping application to download the whole web site (some web browsers can do that). Hopefully you can control it well enough to avoid downloading too much unwanted stuff.

I can download the GrabURL file ok. However, if you already have an equivalent utility, then don't bother with GrabURL.

 

[dbustan]

just use cells!
for more info email me at dbustan@yahoo.com.I had solved this problem.

 

[ahmad_abdulghany]

just use cells!
for more info email me at dbustan(at)yahoo.com.I had solved this problem.

I mailed you many times, and you didn't respond!
Are you still there?

HOW TO DOWNLOAD FROM A WEB SITE AS DISCUSSED ABOVE USING CELLS?

DO YOU MEAN MATLAB CELLS OR WHAT?

Thanks,
Ahmad,