From a2a32a0945dfb0039656f7b142e627f80420c058 Mon Sep 17 00:00:00 2001
From: "ithink.chan" <chenyang@autoai.com>
Date: Mon, 27 Apr 2020 11:36:57 +0800
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Signed-off-by: ithink.chan <chenyang@autoai.com>
---
 Software/Applications/Pacman/Pacman.md | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/Software/Applications/Pacman/Pacman.md b/Software/Applications/Pacman/Pacman.md
index 017c7ad..995397c 100644
--- a/Software/Applications/Pacman/Pacman.md
+++ b/Software/Applications/Pacman/Pacman.md
@@ -1,13 +1,19 @@
 # Pacman
 
+Pacman 是 ArchLinux 及其分版的软件包管理工具，本文简单介绍其使用方法和常见问题处理。
+
 ## Search
 
+使用如下命令查找软件包：
+
 ```sh
 pacman -Ss <key words>
 ```
 
 ## Install
 
+使用如下命令安装软件包：
+
 ```sh
 pacman -S <package name>
 # if error <file> exists in filesystem
@@ -16,6 +22,8 @@ pacman -S <package name> --force
 
 ## Remove
 
+卸载命令和常用参数如下：
+
 ```sh
 pacman -Rscun <package name>
     -c, --cascade        remove packages and all packages that depend on them
@@ -26,6 +34,23 @@ pacman -Rscun <package name>
 
 ## Update
 
+使用如下命令升级软件包和系统。
+
 ```sh
 pacman -Syu
 ```
+
+## 问题处理
+
+在升级或安装软件包时经常遇到如下错误：
+
+```sh
+error: failed to commit transaction (conflicting files)
+xxxxxxxxx exists in filesystem
+```
+
+此时可以使用 --overwrite 强制覆盖该文件。
+
+```sh
+pacman -Syyu --overwrite '*'
+```