qmp-shell: improve help

Describe the arguments & fix the tool name.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170504125432.21653-5-marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

diff --git a/scripts/qmp/qmp-shell b/scripts/qmp/qmp-shell
index 5986e3740c0c7d556f52b7531070cab2ab5aa224..860ffb27f25dbdcf00cdddad3c7d1260817a9adb 100755 (executable)
--- a/scripts/qmp/qmp-shell
+++ b/scripts/qmp/qmp-shell
@@ -396,7 +396,11 @@ def die(msg):
 def fail_cmdline(option=None):
     if option:
         sys.stderr.write('ERROR: bad command-line option \'%s\'\n' % option)
-    sys.stderr.write('qemu-shell [ -v ] [ -p ] [ -H ] [ -N ] < UNIX socket path> | < TCP address:port >\n')
+    sys.stderr.write('qmp-shell [ -v ] [ -p ] [ -H ] [ -N ] < UNIX socket path> | < TCP address:port >\n')
+    sys.stderr.write('    -v     Verbose (echo command sent and received)\n')
+    sys.stderr.write('    -p     Pretty-print JSON\n')
+    sys.stderr.write('    -H     Use HMP interface\n')
+    sys.stderr.write('    -N     Skip negotiate (for qemu-ga)\n')
     sys.exit(1)
 
 def main():