17840: Check for unparsed command line arguments.

[arvados.git] / lib / crunchrun / crunchrun.go

diff --git a/lib/crunchrun/crunchrun.go b/lib/crunchrun/crunchrun.go
index 8f3a30203911187c28b71c405a92caac8cab14e5..a5e69387ec5d877bf0f5320c9eb7d921bacbc8e4 100644 (file)
--- a/lib/crunchrun/crunchrun.go
+++ b/lib/crunchrun/crunchrun.go
@@ -1699,6 +1699,10 @@ func (command) RunCommand(prog string, args []string, stdin io.Reader, stdout, s
        } else if err != nil {
                log.Print(err)
                return 1
+       } else if flags.NArg() != 1 {
+               fmt.Fprintf(flags.Output(), "Usage: %s [options] containerUUID\n\nOptions:\n", prog)
+               flags.PrintDefaults()
+               return 2
        }
 
        containerUUID := flags.Arg(0)