From 33079e3240b3e19727e9bf80673a7b9f8632d7ba Mon Sep 17 00:00:00 2001
From: Ray Voice <33094591+Ray6464@users.noreply.github.com>
Date: Mon, 5 Oct 2020 18:56:27 +0500
Subject: [PATCH] nano: add new command for backup (#4397)

---
 pages/common/nano.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pages/common/nano.md b/pages/common/nano.md
index 71dbef7f2..d586723d9 100644
--- a/pages/common/nano.md
+++ b/pages/common/nano.md
@@ -18,3 +18,7 @@
 - Indent new lines to the previous lines' indentation:
 
 `nano -i {{filename}}`
+
+- Before modification, backup separately as `{{current_file_name}}~`:
+
+`nano -B {{filename}}`