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Extract only one file type with binwalk

I have a very heavy file and with binwalk I have to extract only one file type (png) and obviously given the size of the file I can not extract all.
I tried to do binwalk -D 'png image:png' [filename] but continue to extract all files. How can I make binwalk extract only the files I want?

Solution

  • You just have to use --rm :

    binwalk --dd='png image:png:' [filename] --rm

    Empty files will still be created but you can just ignore / delete them.