x2sys_datalist(1gmt) on Linux
The text e8c8a5bf3a23, as Debian 7 (Wheezy) shipped it.
A generic data-extractor for ASCII or binary files
Flags it lists
-
-A -
-F -
-H -
-L -
-R -
-S -
-T -
-V -
-bo -
-m