How to test that a file ext is the same as the file type

I need to test for the circumstance where someone has renamed a TIF file with 
a JPG extension.  I have to process large number of image files that are 
supposed all be JPG files. If I right-click on a file that is really a TIF, 
windows can show in the properties that it is a TIF even though it has a JPG 
extention. (In the properties window on the Summary tab under the Image node 
for File Type the value is “Tagged Information File Format (TIFF)”

My questions are:
1-	What is the technical term for this property? 
2-	How can I test for the condition where this property does not equal the 
file extension in the file name?

I am running simple dos commands and a thumbnailer product via command line. 
But I am open to more exotic methods.

Thanks in advance…

Date:Mon, 23 Jul 2007 13:16:03 -0700 Author:

Re: How to test that a file ext is the same as the file type

Check out James O'Neill's blog 
http://blogs.technet.com/jamesone/archive/2007/07/13/exploring-photographic-exif-data-using-powershell-of-course.aspx

or Scott Hanselman's 
http://www.hanselman.com/blog/AccessingEXIFPhotoDataFromJPEGsWithPowerShell.aspx


HTH

Shay
http://www.scriptolog.blogspot.com




> I need to test for the circumstance where someone has renamed a TIF
> file with a JPG extension.  I have to process large number of image
> files that are supposed all be JPG files. If I right-click on a file
> that is really a TIF, windows can show in the properties that it is a
> TIF even though it has a JPG extention. (In the properties window on
> the Summary tab under the Image node for File Type the value is
> Tagged Information File Format (TIFF)
> 
> My questions are:
> 1-	What is the technical term for this property?
> 2-	How can I test for the condition where this property does not equal
> the
> file extension in the file name?
> I am running simple dos commands and a thumbnailer product via command
> line. But I am open to more exotic methods.
> 
> Thanks in advance
>

Date:Mon, 23 Jul 2007 20:46:40 +0000 (UTC) Author:

Re: How to test that a file ext is the same as the file type

Thank you Shay,
EXIF is the term I was looking for and was guessing the powershell would be 
the method, but I lacked some key information which you have pointed me to.
again, thank you.

"Shay Levi" wrote:


> Check out James O'Neill's blog 
> http://blogs.technet.com/jamesone/archive/2007/07/13/exploring-photographic-exif-data-using-powershell-of-course.aspx
> 
> or Scott Hanselman's 
> http://www.hanselman.com/blog/AccessingEXIFPhotoDataFromJPEGsWithPowerShell.aspx
> 
> 
> HTH
> 
> Shay
> http://www.scriptolog.blogspot.com
> 
> 
> 
> > I need to test for the circumstance where someone has renamed a TIF
> > file with a JPG extension.  I have to process large number of image
> > files that are supposed all be JPG files. If I right-click on a file
> > that is really a TIF, windows can show in the properties that it is a
> > TIF even though it has a JPG extention. (In the properties window on
> > the Summary tab under the Image node for File Type the value is
> > “Tagged Information File Format (TIFF)”
> > 
> > My questions are:
> > 1-	What is the technical term for this property?
> > 2-	How can I test for the condition where this property does not equal
> > the
> > file extension in the file name?
> > I am running simple dos commands and a thumbnailer product via command
> > line. But I am open to more exotic methods.
> > 
> > Thanks in advance…
> > 
> 
> 
>

Date:Mon, 23 Jul 2007 14:30:03 -0700 Author: