Add receptorctl work results doc (#1064)

Author: thom-at-redhat

docs/source/receptorctl/receptorctl_index.rst

@@ -18,3 +18,4 @@ The Receptor client, ``receptorctl``, provides a command line interface for inte
    receptorctl_work_cancel
    receptorctl_work_list
    receptorctl_work_release
+   receptorctl_work_results

docs/source/receptorctl/receptorctl_work_results.rst

@@ -0,0 +1,26 @@
+------------
+work results
+------------
+
+.. contents::
+   :local:
+
+``receptorctl work results`` gets results for successfully completed, failed, stopped, or currently running, units of work.
+
+Command syntax: ``receptorctl --socket=<socket_path> work results [<<Options>>] <<Unit ID>> [...]``
+
+``socket_path`` is the control socket address for the Receptor connection.
+   The default is ``unix:`` for a Unix socket.
+   Use ``tcp://`` for a TCP socket.
+   The corresponding environment variable is ``RECEPTORCTL_SOCKET``.
+
+.. code-block:: text
+
+  ss --listening --processes --unix 'src = unix:<socket_path>'
+  Netid         State          Recv-Q         Send-Q                   Local Address:Port                     Peer Address:Port        Process
+  u_str         LISTEN         0              4096                   /tmp/local.sock 38130170                            * 0            users:(("receptor",pid=3226769,fd=7))
+
+``ps -fp $(pidof receptor)``
+``lsof -p <pid>``
+
+``Unit ID`` is a unique identifier for a work unit (job). When running the ``work results`` command, you should specify the ``Unit ID`` for the Receptor node to which you are connected.