PS 3 to run command line program recursively

Powershell 3 or 4 - Can you show me how this program can be run on a folder that contains many subfolders with subfolders to covert the same filename it finds with a .JPG extension to the same filename with a .PDF extension?

JPEGtoPDF from http://www.compulsivecode.com/project_imagetopdf.aspx

USAGE:
jpegtopdf.exe "PDFFilepath_and_name.PDF" "jpeg_file_path_and_name.JPG"

main folder is c:\storage\
I'm looking to create a copy of the file in PDF format like ilename1.jpg to filename1.pdf.
There are only about 1,000 jpg files out of about 600,000 PDF files in the directory tree.


I figure there must be a simple way in PS to do this.
What do you think?
thanks!
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johnj_01201Asked:
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footechConnect With a Mentor Commented:
You can try the following:
$search = "c:\storage"
gci $search -filter *.jpg -Recurse | %{
    jpegtopdf.exe "$($_.DirectoryName)\$($_.BaseName).PDF" $_.FullName
}

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oBdAConnect With a Mentor Commented:
There's a simple way with the good old command prompt as well (you might have to add the path to the exe file, or "cd" into the directory where the exe is stored):
for /r "C:\storage" %a in (*.jpg) do jpegtopdf.exe "%~dpna.PDF" "%~fa"

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