unikernel/duniverse/cmdliner/README.md

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+Cmdliner — Declarative definition of command line interfaces for OCaml
+======================================================================
+
+Cmdliner allows the declarative definition of command line interfaces
+for OCaml.
+
+It provides a simple and compositional mechanism to convert command
+line arguments to OCaml values and pass them to your functions. The
+module automatically handles command line completion, syntax errors,
+help messages and UNIX man page generation. It supports programs with
+single or multiple commands and respects most of the [POSIX] and [GNU]
+conventions.
+
+Cmdliner has no dependencies and is distributed under the ISC license.
+
+Homepage: <http://erratique.ch/software/cmdliner>
+
+[POSIX]: http://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap12.html
+[GNU]: http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html
+
+## Installation
+
+Cmdliner can be installed with `opam`:
+
+    opam install cmdliner
+
+If you don't use `opam` consult the [`opam`](opam) file for build
+instructions.
+
+## Documentation
+
+The documentation can be consulted [online] or via `odig doc cmdliner`.
+
+Questions are welcome but better asked on the [OCaml forum] than on the
+issue tracker.
+
+[online]: http://erratique.ch/software/cmdliner/doc/
+[OCaml forum]: https://discuss.ocaml.org/
+
+## Sample programs
+
+A few examples and blueprints can be found in the
+[documentation][online] and in the [test](test/) directory.