Archlinux cannot upgrade system (ca-certificates)

问题描述

用$ sudo pacman -Syu 升级系统时遇到下面的问题：

error: failed to commit transaction (conflicting files)
ca-certificates-utils: /etc/ssl/certs/ca-certificates.crt exists in filesystem
Errors occurred, no packages were upgraded.

解决方法

$ sudo rm /etc/ssl/certs/ca-certificates.crt
再升级系统