diff --git a/cmd_build.go b/cmd_build.go
index 73535ce..95263cc 100644
--- a/cmd_build.go
+++ b/cmd_build.go
@@ -1,6 +1,10 @@
 package main
 
-import ()
+import (
+	"fmt"
+	"log"
+	"os/exec"
+)
 
 var buildCmd = &Command{
 	Name:    "build",
@@ -11,5 +15,9 @@ var buildCmd = &Command{
 }
 
 func buildRun(cmd *Command, args ...string) {
-
+	out, err := exec.Command("go", "build", "-ldflags", fmt.Sprintf("\"-X main.Build.Date %s main.Build.GitHash %s main.Build.Num %d\"", "2014-12-08", "a1b2c3d4", 107)).Output()
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Printf("%s\n", out)
 }
diff --git a/warren.go b/warren.go
index 7a597fe..c00018e 100644
--- a/warren.go
+++ b/warren.go
@@ -18,7 +18,7 @@ Usage:
 var usageTmpl = template.Must(template.New("usage").Parse(`
 Commands:{{range .}}
      {{.Name | printf "%-10s"}} {{.Summary}}{{end}}
- `))
+`))
 
 var commands = []*Command{
 	buildCmd,