> copyfilerange --help
Usage:
copyfilerange [options] <source> <destination> <range>...
Copy the specified range(s) from source to destination file.
Options:
-r, --ranges <file> read ranges separated by newlines from this file
-v, --verbose verbose mode
-h, --help display this help
-V, --version display version
Arguments:
<range> is of the form <source_offset>:<destination_offset>:<length>,
with all values in bytes. If <length> is 0, as much data as available
is copied. When an offset is omitted, the last file position is used.
For more details see copyfilerange(1).
