rename files programatically

[052ftemu]

Hi,

can anybody tell me how to rename files without changing content or directory.

It seems to be sooo easy (and most likely it is) but I couldn´t find any LV function for this.

Thank you

[dan_u]

On the advanced file palette you'll find the move function. You can use this to rename files.

[052ftemu]

Hi,

I know about this function, but I don´t want to move this file!

I just want to rename it.

With the help of the FTP functions it is possible to rename a file but I don´t want to start a ftp session for such a simple thing.

Best wishes  

[dan_u]

Move doesn't necessarily move a file to another directory. You can use it like this:
Source path: D:\Test\file_before.ext
Target path: D:\Test\file_after.ext

Use the same path but a different filename. This is the same as rename.



Message Edited by dan_u on 11-20-2007 02:14 PM

[052ftemu]

Thank you a lot!

This is what I wanted.

[jschuler]

Renaming directories with Move seems very inefficient:
Folders containing large files take a number seconds to rename, (using LV 7.1.1)

Is there a better way to simply rename a directory, instead of what seems to be a Copy-Delete?

[Matt_W1]

You can just move the directory instead of every file in the directory.

In general move only does a copy-delete when you move the files to another partition.

Matt W


Message Edited by Matt W on 01-22-2008 05:51 PM

[jschuler]

> You can just move the directory instead of every file in the directory.

That's the idea, yes...

> In general move only does a copy-delete when you move the files to another partition.

This is not what I'm seeing.

I create a VI with Move (from Advanced File Functions within File I/O) as the only operation.
I supply Move with, say:
source path: E:\OldDirName
   a directory with two 600MB (.rar) files inside
target path: E:\NewDirName
  which does not yet exist

I run the VI.  It runs for at least 2 minutes.
I can watch (in the Explorer window) the NewDirName folder appear, and files one-by-one, inside it, while the old one still exists. OldDirName finally disappears just before the VI stops execution.

If I do the same with an empty folder, it is nearly instantaneous.

[tst]

If you don't mind losing platform indepedence, you can simply call the OS command using the System Exec VI. In Windows, this would be "rename" or "ren". you might need to prepend it with "cmd /c" to get it to work.

[jschuler]

I ended up making a call to the Windows API MoveFile function ( http://msdn2.microsoft.com/en-us/library/aa365239.aspx ), which works as I'd hoped it would.