之前要查一個檔案在那一個 package 裡面都用 apt-file，它有個壞處是要手動更新 package 的資訊（麻煩，且導致 apt-file 跟 package system 不同步）。剛才發現原來
I used to use apt-file to search which file is in which package. But the disadvantage is you have to upda the package information manually (annoying, also causing the asynchronization to the package system).
I just found the
dpkg -Scan do the same thing. Since it use the same database as the package system, there's not the same problem!