[PATCH 27/32] doc: add documentation for 'echo'

[Robert Schwebel]

Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
---
 Documentation/commands.dox |    1 +
 commands/echo.c            |   10 ++++++++++
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/Documentation/commands.dox b/Documentation/commands.dox
index 63ed480..28ddff4 100644
--- a/Documentation/commands.dox
+++ b/Documentation/commands.dox
@@ -11,6 +11,7 @@
 @li @subpage delpart_command
 @li @subpage devinfo_command
 @li @subpage dfu_command
+ at li @subpage echo_command
 @li @subpage edit_command
 @li @subpage erase_command
 @li @subpage export_command
diff --git a/commands/echo.c b/commands/echo.c
index dfa14d6..5cc150d 100644
--- a/commands/echo.c
+++ b/commands/echo.c
@@ -111,8 +111,18 @@ no_optarg_out:
 	return 1;
 }
 
+BAREBOX_CMD_HELP_START(echo)
+BAREBOX_CMD_HELP_USAGE("echo [OPTION]... [STRING]\n")
+BAREBOX_CMD_HELP_SHORT("Display a line of text.\n")
+BAREBOX_CMD_HELP_OPT  ("-n",  "do not output the trailing newline\n")
+BAREBOX_CMD_HELP_OPT  ("-a",  "FIXME\n")
+BAREBOX_CMD_HELP_OPT  ("-o",  "FIXME\n")
+BAREBOX_CMD_HELP_OPT  ("-e",  "FIXME\n")
+BAREBOX_CMD_HELP_END
+
 BAREBOX_CMD_START(echo)
 	.cmd		= do_echo,
 	.usage		= "echo args to console",
+	BAREBOX_CMD_HELP(cmd_echo_help)
 BAREBOX_CMD_END
 
-- 
1.7.2.3