Usage: ./opkg-opk [-c CONTROL-DIR] [-f CONTROL-FILE] [-l] PACKAGE
   or: ./opkg-opk -b -c CONTROL-DIR -d DATA-DIR PACKAGE

--- OR ---

Usage: ./opkg-opk [-c CONTROL-DIR] [-f CONTROL-FILE] [-F DATA-FILE] [-l] [-L] PACKAGE
   or: ./opkg-opk -b -c CONTROL-DIR -d DATA-DIR PACKAGE
Options:
  -b, --build                      Create a package from the specified
                                   CONTROL-DIR and DATA-DIR.
  -c, --control-dir=CONTROL-DIR    In build mode, read control files from
                                   CONTROL-DIR.  Otherwise, extract control
                                   files into CONTROL-DIR.
  -d, --data-dir=DATA-DIR          In build mode, read data files from DATA-DIR.
  -f, --control-file=CONTROL-FILE  Print the contents of the named control file.
  -F, --data-file=DATA-FILE        Print the contents of the named data file.
  -l, --list-control               List the control files.
  -L, --list-data                  List the data files.

-f and -l are mutually exclusive
-F and -L are mutually exclusive
-f, -F, -l, and -L are invalid with -b
-d is only valid with -b