wget starting from arbitrary byte

Question

Using the -c flag, I can tell wget to resume a download. wget will then query the size of the pre-existing file to tell the server from where to resume the download.

Is there a way to tell wget to start from an arbitrary offset, i.e. an equivalent to curl's -C option?

I know that I can always manually create a file with the right size, append the new data to it, and then remove the prefix, but it is very cumbersome to do so.

Answer 1

Starting from version 1.16, --start-pos. From the man page:

   --start-pos=OFFSET
      Start downloading at zero-based position OFFSET.  
      Offset may be expressed in bytes, kilobytes with the `k' suffix,
      or megabytes with the `m' suffix, etc.

      --start-pos has higher precedence over --continue.  When
      --start-pos and --continue are both specified, wget will emit a
      warning then proceed as if --continue was absent.

      Server support for continued download is required, otherwise
      --start-pos cannot help.  See -c for details.

This option is unavailable for wget versions older than 1.16.