commands: non-zero exit status on error

fixes #133

cmd/akash/base.go

@@ -7,8 +7,9 @@ import (
 
 func baseCommand() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "akash",
-		Short: "Akash client",
+		Use:          "akash",
+		Short:        "Akash client",
+		SilenceUsage: true,
 	}
 	context.SetupBaseCommand(cmd)
 	return cmd

cmd/akash/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"math/rand"
+	"os"
 	"time"
 
 	"github.com/ovrclk/akash/cmd/akash/query"
@@ -17,5 +18,8 @@ func main() {
 	root.AddCommand(query.QueryCommand())
 	root.AddCommand(statusCommand())
 	root.AddCommand(marketplaceCommand())
-	root.Execute()
+
+	if err := root.Execute(); err != nil {
+		os.Exit(1)
+	}
 }

cmd/akashd/base.go

@@ -29,8 +29,9 @@ func initEnv(path string) error {
 
 func baseCommand() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "akashd",
-		Short: "Akash node",
+		Use:          "akashd",
+		Short:        "Akash node",
+		SilenceUsage: true,
 		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
 			root, err := cmd.Flags().GetString(flagRootDir)
 			if err != nil {

cmd/akashd/main.go

@@ -1,8 +1,13 @@
 package main
 
+import "os"
+
 func main() {
 	root := baseCommand()
 	root.AddCommand(initCommand())
 	root.AddCommand(startCommand())
-	root.Execute()
+
+	if err := root.Execute(); err != nil {
+		os.Exit(1)
+	}
 }