man: add "EXIT STATUS" section to nmcli man page

man/nmcli.1.in

@@ -22,7 +22,7 @@
 .\"
 .\" Copyright (C) 2010 Red Hat, Inc.
 .\"
-.TH NMCLI "1" "14 April 2010"
+.TH NMCLI "1" "26 August 2010"
 
 .SH NAME
 nmcli \- command-line tool for controlling NetworkManager
@@ -312,10 +312,28 @@ No simple reference.
 .fi
 .RE
 
+.SH EXIT STATUS
+\fInmcli\fP exits with status 0 if it succeeds, a value greater than 0 is returned if errors occur.
+.IP "0" 4
+Success - indicates the operation succeeded
+.IP "1" 4
+Unknown or unspecified error
+.IP "2" 4
+Invalid user input, wrong \fInmcli\fP invocation
+.IP "3" 4
+Timeout expired (see commands with \fI\-\-timeout\fP option)
+.IP "4" 4
+Connection activation failed
+.IP "5" 4
+Connection deactivation failed
+.IP "6" 4
+Disconnecting device failed
+
 .SH BUGS
 There are probably some.  If you find a bug, please report to
 https://bugzilla.gnome.org/ \- product \fINetworkManager\fP.
 
 .SH SEE ALSO
 .BR nm\-tool (1),
+.BR nm\-online (1),
 .BR NetworkManager(8).