w disk partitions, which are block special files.  This
             option also causes file to disregard the file size as reported by
             stat(2) since on some systems it reports a zero size for raw disk
             partitions.

     -v, --version
             Print the version of the program and exit.

     -z, --uncompress
             Try to look inside compressed files.

     -0, --print0
             Output a null character ‘\0’ after the end of the filename. Nice
             to cut(1) 