From 8a1ea55ec1893f980b5271860cd76977f4e55f0b Mon Sep 17 00:00:00 2001
From: onceupon <nim.1111.ou@gmail.com>
Date: Wed, 23 Aug 2017 17:17:47 +0800
Subject: [PATCH] add system

List installed packages
---
 README.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/README.md b/README.md
index 1b05ab5..0cabd30 100644
--- a/README.md
+++ b/README.md
@@ -1892,4 +1892,13 @@ sudo gpasswd -a nice docker
 sudo hostname your-new-name
 ```
 
+##### List installed packages
+```bash
+apt list --installed
+```
+or Red Hat: 
+```bash
+yum list installed
+```
+
 =-=-=-=-=-A lot more coming!! =-=-=-=-=-=-=-=-=-=waitwait-=-=-=-=-=-=-=-=-=-