軟件安裝分為：(installed|reinstalled|removed|downgraded|upgraded)1、查看安裝的 cat /var/log/pacman.log | grep -E installed
2、查看再安裝 cat /var/log/pacman.log | grep -E reinstalled
3、查看刪除的 cat /var/log/pacman.log | grep -E removed
4、查看下載的 cat /var/log/pacman.log | grep -E downgraded
5、查看升級的 cat /var/log/pacman.log | grep -E upgraded
最好使用管道處理下：cat /var/log/pacman.log | grep -E installed >> ~/installed.txt
查看文件：vim ~/installed.txt