master - commands: suggest --help if command doesn't match

[David Teigland]

Gitweb:        http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=b2fd5b31d3cbe1267...
Commit:        b2fd5b31d3cbe1267ab01c4d6af4785f800938f4
Parent:        698abdde165a3e747b81f18cf3405f2d4abb5bae
Author:        David Teigland 
AuthorDate:    Mon Feb 13 13:46:17 2017 -0600
Committer:     David Teigland 
CommitterDate: Mon Feb 13 13:46:17 2017 -0600

commands: suggest --help if command doesn't match

---
 tools/lvmcmdline.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
index 58d1a44..44efc85 100644
--- a/tools/lvmcmdline.c
+++ b/tools/lvmcmdline.c
@@ -1542,6 +1542,7 @@ static struct command *_find_command(struct cmd_context *cmd, const char *path,
    if (!best_required) {
    	/* cmd did not have all the required opt/pos args of any command */
    	log_error("Failed to find a matching command definition.");
+		log_error("Run '%s --help' for more information.", name);
    	if (close_ro) {
    		log_warn("Closest command usage is:");
    		print_usage(&_cmdline.commands[close_i]);