Update for bytomcli help cmd (#155)

diff --git a/cmd/bytomcli/main.go b/cmd/bytomcli/main.go
index d85af7b..00176e7 100755 (executable)
--- a/cmd/bytomcli/main.go
+++ b/cmd/bytomcli/main.go
@@ -21,12 +21,12 @@ import (
        "github.com/bytom/blockchain/rpc"
        "github.com/bytom/blockchain/txbuilder"
        "github.com/bytom/cmd/bytomcli/example"
+       "github.com/bytom/config"
        "github.com/bytom/crypto/ed25519"
        "github.com/bytom/crypto/ed25519/chainkd"
        "github.com/bytom/encoding/json"
        "github.com/bytom/env"
        "github.com/bytom/errors"
-       "github.com/bytom/config"
 )
 
 // config vars
@@ -120,7 +120,9 @@ func main() {
        }
        cmd := commands[os.Args[1]]
        if cmd == nil {
-               fmt.Fprintln(os.Stderr, "unknown command:", os.Args[1])
+               if os.Args[1] != "-h" && os.Args[1] != "--h" {
+                       fmt.Fprintln(os.Stderr, "unknown command:", os.Args[1])
+               }
                help(os.Stderr)
                os.Exit(1)
        }
@@ -275,13 +277,11 @@ func dieOnRPCError(err error, prefixes ...interface{}) {
 }
 
 func help(w io.Writer) {
-       fmt.Fprintln(w, "usage: corectl [-version] [command] [arguments]")
        fmt.Fprint(w, "\nThe commands are:\n\n")
        for name := range commands {
                fmt.Fprintln(w, "\t", name)
        }
-       fmt.Fprint(w, "\nFlags:\n")
-       fmt.Fprintln(w, "\t-version   print version information")
+       fmt.Fprint(w, "\nVersion:0.2.0\n")
        fmt.Fprintln(w)
 }