Merge pull request #45 from NETWAYS/version-flag

Version flag

Author: RincewindsHat

Makefile

@@ -22,7 +22,7 @@ GO_LINKEROPTS := -ldflags $(GO_LINKERFLAGS)
 GO_FILES = $(shell find . -iname '*.go')
 
 build:
-	go build
+	go build $(GO_LINKEROPTS)
 
 build-all: $(TARGET_arm6) $(TARGET_amd64) $(TARGET_386) $(TARGET_arm64) $(TARGET_riscv64)
 

cmd/root.go

@@ -52,13 +52,14 @@ func init() {
 
 	flagSet := rootCmd.Flags()
 	flagSet.Bool("dump-icinga2-config", false, "Dump icinga2 config for this plugin")
+
+	flagSet.Bool("version", false, "Display version and other information about this program")
 }
 
 func RunFunction(cmd *cobra.Command, args []string) {
 	flagSet := cmd.Flags()
 
 	dumpConfig, err := flagSet.GetBool("dump-icinga2-config")
-
 	if err != nil {
 		check.ExitError(err)
 	}
@@ -68,6 +69,16 @@ func RunFunction(cmd *cobra.Command, args []string) {
 		os.Exit(check.OK)
 	}
 
+	showVersion, err := flagSet.GetBool("version")
+	if err != nil {
+		check.ExitError(err)
+	}
+
+	if showVersion {
+		fmt.Println(cmd.Version)
+		os.Exit(check.OK)
+	}
+
 	Help(cmd, args)
 }