You may find this program of mine useful.
It runs on Win and Unix,
It can scan subdirectories, and can scan archive files (ZIP, EGP, DOCX, etc).
It can read files contents, or just retrieve file names.
It extracts file metadata.
It can filter the files and/or contents to be targeted in different ways.
Enjoy!
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Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.