From 642365ab551c78238ddbd5407e06729ddaf28b8e Mon Sep 17 00:00:00 2001
From: "rick.chan" <chenyang@autoai.com>
Date: Wed, 20 Jan 2021 14:52:20 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=BA=20Pacman=20=E8=A1=A5=E5=85=85=20Query?=
 =?UTF-8?q?=20=E6=96=B9=E6=B3=95.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: rick.chan <chenyang@autoai.com>
---
 Software/Applications/Pacman/Pacman.md | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/Software/Applications/Pacman/Pacman.md b/Software/Applications/Pacman/Pacman.md
index 3b22cea..6898028 100644
--- a/Software/Applications/Pacman/Pacman.md
+++ b/Software/Applications/Pacman/Pacman.md
@@ -20,7 +20,17 @@ pacman -S <package name>
 pacman -S <package name> --force
 ```
 
-## 3.Remove
+## 3.Query
+
+```bash
+pacman -Qs <key words>
+# list installed packages only found in sync db(s) [filter]
+pacman -Qen
+# list installed packages not found in sync db(s) [filter]
+pacman -Qem
+```
+
+## 4.Remove
 
 卸载命令和常用参数如下：
 
@@ -32,7 +42,7 @@ $ pacman -Rscun <package name>
     -u, --unneeded       remove unneeded packages
 ```
 
-## 4.Refresh Package Databases
+## 5.Refresh Package Databases
 
 长时间不进行更新的话本地 package databases 会与远程的不一致，导致安装软件时出现：
 
@@ -46,7 +56,7 @@ error: failed retrieving file
 pacman -Syu
 ```
 
-## 5.Update
+## 6.Update
 
 使用如下命令升级软件包和系统。
 
@@ -54,7 +64,7 @@ pacman -Syu
 pacman -Syu
 ```
 
-## 6.从本地文件安装
+## 7.从本地文件安装
 
 使用如下命令可以从本地“\*.pkg.tar.xz”（2020年1月份以后改为 “\*.pkg.tar.zst”）文件进行安装：
 
@@ -62,9 +72,9 @@ pacman -Syu
 pacman {-U --upgrade}  [选项] <文件>
 ```
 
-## 7.问题处理
+## 8.问题处理
 
-### 7.1.conflicting files
+### 8.1.conflicting files
 
 在升级或安装软件包时经常遇到如下错误：