add zenity prompt driver

prompt/zenity.go

@@ -0,0 +1,24 @@
+// +build linux
+
+package prompt
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+func ZenityPrompt(prompt string) (string, error) {
+	cmd := exec.Command("/usr/bin/zenity", "--entry", "--title=aws-vault", fmt.Sprintf(`--text=%s`, prompt))
+
+	out, err := cmd.Output()
+	if err != nil {
+		return "", err
+	}
+
+	return strings.TrimSpace(string(out)), nil
+}
+
+func init() {
+	Methods["zenity"] = ZenityPrompt
+}