added banner and make flags

Makefile

@@ -1,6 +1,16 @@
 TARGET=./dist
 ARCHS=amd64 386 
 GOOS=windows linux darwin
+PACKAGENAME="github.com/ropnop/kerbrute"
+
+COMMIT=`git rev-parse --short HEAD`
+DATE=`date +%m/%d/%y`
+GOVERSION=`go version | cut -d " " -f 3`
+
+LDFLAGS="-X ${PACKAGENAME}/util.GitCommit=${COMMIT} \
+-X ${PACKAGENAME}/util.BuildDate=${DATE} \
+-X ${PACKAGENAME}/util.GoVersion=${GOVERSION} \
+"
 
 .PHONY: help windows linux mac all clean
 
@@ -10,21 +20,21 @@ help:           ## Show this help.
 windows: ## Make Windows x86 and x64 Binaries
 	@for ARCH in ${ARCHS}; do \
 		echo "Building for windows $${ARCH}.." ;\
-		GOOS=windows GOARCH=$${ARCH} go build -o ${TARGET}/kerbrute_windows_$${ARCH}.exe ;\
+		GOOS=windows GOARCH=$${ARCH} go build -ldflags ${LDFLAGS} -o ${TARGET}/kerbrute_windows_$${ARCH}.exe ;\
 	done; \
 	echo "Done."
 
 linux: ## Make Linux x86 and x64 Binaries
 	@for ARCH in ${ARCHS}; do \
 		echo "Building for linux $${ARCH}..." ; \
-		GOOS=linux GOARCH=$${ARCH} go build -o ${TARGET}/kerbrute_linux_$${ARCH} ;\
+		GOOS=linux GOARCH=$${ARCH} go build -ldflags "${LDFLAGS}" -o ${TARGET}/kerbrute_linux_$${ARCH} ;\
 	done; \
 	echo "Done."
 
 mac: ## Make Darwin (Mac) x86 and x64 Binaries
 	@for ARCH in ${ARCHS}; do \
 		echo "Building for mac $${ARCH}..." ; \
-		GOOS=darwin GOARCH=$${ARCH} go build -o ${TARGET}/kerbrute_darwin_$${ARCH} ;\
+		GOOS=darwin GOARCH=$${ARCH} go build -ldflags ${LDFLAGS} -o ${TARGET}/kerbrute_darwin_$${ARCH} ;\
 	done; \
 	echo "Done."
 

cmd/version.go

@@ -0,0 +1,22 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/ropnop/kerbrute/util"
+	"github.com/spf13/cobra"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Display version info and quit",
+	Run:   showVersion,
+}
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}
+
+func showVersion(cmd *cobra.Command, args []string) {
+	fmt.Printf("Kerbrute %v\nCommit: %v\nBuilt: %v with %v\n", util.Version, util.GitCommit, util.BuildDate, util.GoVersion)
+}

main.go

@@ -1,30 +1,11 @@
 package main
 
 import (
-	"fmt"
-
 	"github.com/ropnop/kerbrute/cmd"
+	"github.com/ropnop/kerbrute/util"
 )
 
-var (
-	version = "dev"
-	commit  = "none"
-	date    = "unknown"
-	author  = "Ronnie Flathers (@ropnop)"
-)
-
-func banner() {
-	banner := `
-    __             __               __     
-   / /_____  _____/ /_  _______  __/ /____ 
-  / //_/ _ \/ ___/ __ \/ ___/ / / / __/ _ \
- / ,< /  __/ /  / /_/ / /  / /_/ / /_/  __/
-/_/|_|\___/_/  /_.___/_/   \__,_/\__/\___/                                        
-`
-	fmt.Printf("%v\nVersion: %v(%v) - %v\t%v\n\n", banner, version, commit, date, author)
-}
-
 func main() {
-	banner()
+	util.PrintBanner()
 	cmd.Execute()
 }

util/banner.go

@@ -0,0 +1,14 @@
+package util
+
+import "fmt"
+
+func PrintBanner() {
+	banner := `
+    __             __               __     
+   / /_____  _____/ /_  _______  __/ /____ 
+  / //_/ _ \/ ___/ __ \/ ___/ / / / __/ _ \
+ / ,< /  __/ /  / /_/ / /  / /_/ / /_/  __/
+/_/|_|\___/_/  /_.___/_/   \__,_/\__/\___/                                        
+`
+	fmt.Printf("%v\nVersion: %v(%v) - %v - %v\n\n", banner, Version, GitCommit, BuildDate, Author)
+}

util/version.go

@@ -0,0 +1,9 @@
+package util
+
+var (
+	Version   = "dev"
+	GitCommit string
+	BuildDate string
+	GoVersion string
+	Author    = "Ronnie Flathers @ropnop"
+)