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At the linux command line, I'd like to compress all .pdf files in a directory, any of it's subdirectories and so on - but only .pdf files. I'm struggling to figure out the syntax, any ideas appreciated.

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up vote 1 down vote accepted

Try this: find -iname '*.pdf' -print0 | xargs -0 tar -cf docs.tar

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PDF files are binary files and probably won't compress much. tar doesn't compress anyway, without the -z option, and it would leave the uncompressed PDF files in place.

But if you want to try compressing PDF files, you could use

find . -iname '*.pdf' -exec gzip {} \;

This will compress all PDF files (and only PDF files) in folders below the current directory.

Each filename.pdf will be replaced by filename.pdf.gz

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How do you uncompress all the files later? – Xeoncross Dec 17 '12 at 17:48

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