new: new -version command line argument to print version, build information and exit

core/options.go

@@ -11,6 +11,7 @@ type Options struct {
 	Silent        *bool
 	NoColors      *bool
 	NoHistory     *bool
+	PrintVersion  *bool
 	EnvFile       *string
 	Commands      *string
 	CpuProfile    *string
@@ -24,6 +25,7 @@ func ParseOptions() (Options, error) {
 		AutoStart:     flag.String("autostart", "events.stream, net.recon", "Comma separated list of modules to auto start."),
 		Caplet:        flag.String("caplet", "", "Read commands from this file and execute them in the interactive session."),
 		Debug:         flag.Bool("debug", false, "Print debug messages."),
+		PrintVersion:  flag.Bool("version", false, "Print the version and exit."),
 		Silent:        flag.Bool("silent", false, "Suppress all logs which are not errors."),
 		NoColors:      flag.Bool("no-colors", false, "Disable output color effects."),
 		NoHistory:     flag.Bool("no-history", false, "Disable interactive session history file."),

main.go

@@ -6,6 +6,8 @@ import (
 	"os"
 	"strings"
 
+	"runtime"
+
 	"github.com/bettercap/bettercap/core"
 	"github.com/bettercap/bettercap/log"
 	"github.com/bettercap/bettercap/modules"
@@ -31,9 +33,15 @@ func main() {
 		}
 	}
 
-	appName := fmt.Sprintf("%s v%s", core.Name, core.Version)
+	if *sess.Options.PrintVersion {
+		fmt.Printf("%s v%s (built for %s %s with %s)\n", core.Name, core.Version, runtime.GOOS, runtime.GOARCH, runtime.Version())
+		return
+	}
 
-	fmt.Printf("%s (type '%s' for a list of commands)\n\n", tui.Bold(appName), tui.Bold("help"))
+	appName := fmt.Sprintf("%s v%s", core.Name, core.Version)
+	appBuild := fmt.Sprintf("(built for %s %s with %s)", runtime.GOOS, runtime.GOARCH, runtime.Version())
+
+	fmt.Printf("%s %s [type '%s' for a list of commands]\n\n", tui.Bold(appName), tui.Dim(appBuild), tui.Bold("help"))
 
 	// Load all modules
 	modules.LoadModules(sess)

session/session.go

@@ -173,6 +173,10 @@ func (s *Session) Module(name string) (err error, mod Module) {
 }
 
 func (s *Session) Close() {
+	if *s.Options.PrintVersion {
+		return
+	}
+
 	if *s.Options.Debug {
 		fmt.Printf("\nStopping modules and cleaning session state ...\n")
 		s.Events.Add("session.closing", nil)