add manage command

cmd/common.go

@@ -0,0 +1,33 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+)
+
+const (
+	red    = "\033[0;31m"
+	green  = "\033[0;32m"
+	yellow = "\033[0;33m"
+	plain  = "\033[0m"
+)
+
+func checkRunning() (bool, error) {
+	o, err := execCommand("systemctl status V2bX | grep Active")
+	if err != nil {
+		return false, err
+	}
+	return strings.Contains(o, "running"), nil
+}
+
+func Err(msg ...any) string {
+	return red + fmt.Sprint(msg...) + plain
+}
+
+func Ok(msg ...any) string {
+	return green + fmt.Sprint(msg...) + plain
+}
+
+func Warn(msg ...any) string {
+	return yellow + fmt.Sprint(msg...) + plain
+}