Get Recently Modified Files

[zou]

I need to create a list of recently modified files from a given folder on local net.  The folder contains thousands of files in hundreds subfolders.

The conventional method (attached) take way too long.  ~40 secs in office, > 5 min at home (with VPN).

I can do better with command prompt.  ~20 secs in office

Window Explorer (manually) can do it in ~5 sec  in office,  < 20 sec at home.

Anyone got a better solution ?

[PiDi]

I don't know if it's better, but here's .NET solution:

It's about 3x faster than native LabVIEW on my machine (listing files using DirectoryInfo rather than native Recursive File List.vi looks much more efficient). I didn't test it thoroughly, so you might want to play a bit with FileInfo properties (there are UTC versions of timestamps). Or you might just get file name from FileInfo and then native File/Directory Info as in your code.

Here's documentation on DirectoryInfo class: https://msdn.microsoft.com/en-us/library/system.io.directoryinfo_methods(v=vs.110).aspx

[zou]

Thanks.

It's much faster to use .net to retrieve files.  19 sec.

[zou]

~60 sec at home.

[wiebe@CARYA]

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@PiDi wrote:

I didn't test it thoroughly,

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I know it's a quickie (and that OP and you know this), but close those refs!

It will leak memory (at 10 MB\sec. on my PC) when used in production code if you don't.

[ben64 · Accepted solution]

Have you tried with the System Exec.vi?

Ben64

[zou]

Yes. I did try this yesterday.  But in a batch file.  Have to connect to the local net first.  Windows mapping not recognized by command prompt.

The test result was ~ 5 sec in office, and ~20 sec at home.

[wiebe@CARYA]

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@ben64 wrote:

Have you tried with the System Exec.vi?

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He did mention that ("I can do better with command prompt"), but it's a nice reference anyway! I can imagine most people will simply list all files and then parse the dates, but this must be way more efficient.

[zou]

Here is my batch file:

PUSHD \\local network path
FORFILES /M *.xlsx /S /D +2017-09-19 /C "cmd /c echo @path @fdate" > %USERPROFILE%\Desktop\list.txt
POPD