fix 'kubectl cp' with no arguments causes a panic

254b02bc · Guoliang Wang · 28b7809d · 254b02bc
Commit 254b02bc authored Jun 26, 2018 by Guoliang Wang
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cp.go pkg/kubectl/cmd/cp.go +3 -0

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--- a/pkg/kubectl/cmd/cp.go
+++ b/pkg/kubectl/cmd/cp.go
@@ -164,6 +164,9 @@ func (o *CopyOptions) Validate(cmd *cobra.Command, args []string) error {
 }

 func (o *CopyOptions) Run(args []string) error {
+	if len(args) < 2 {
+		return fmt.Errorf("source and destination are required")
+	}
 	srcSpec, err := extractFileSpec(args[0])
 	if err != nil {
 		return err