安装所需的磁盘空间大于移除后释放的磁盘空间：为什么？

Question

我安装了 OBS Studio：

sudo apt-get install obs-studio 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  gir1.2-keybinder-3.0 libkeybinder-3.0-0
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  libfdk-aac0 libluajit-5.1-2 libluajit-5.1-common libxcb-xinerama0
The following NEW packages will be installed:
  libfdk-aac0 libluajit-5.1-2 libluajit-5.1-common libxcb-xinerama0 obs-studio
0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
Need to get 3,678 kB of archives.
After this operation, 13.0 MB of additional disk space will be used.
Do you want to continue? [Y/n] 

我决定删除它：

sudo apt-get --purge remove obs-studio Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  gir1.2-keybinder-3.0 libfdk-aac0 libkeybinder-3.0-0 libluajit-5.1-2
  libluajit-5.1-common libxcb-xinerama0
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  obs-studio*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 11.6 MB disk space will be freed.
Do you want to continue? [Y/n] 

删除它时，我希望释放13.0 MB的磁盘空间，因为这是安装所需的，但我反而释放了11.6 MB 的磁盘空间：为什么？

Answer 1

区别可以在这里找到：

The following additional packages will be installed:
  libfdk-aac0 libluajit-5.1-2 libluajit-5.1-common libxcb-xinerama0

卸载后obs-studio，apt-get autoremove如果没有其他软件包依赖它们，这些软件包应该可以使用删除。

你也可以运行：

sudo apt-get remove --purge obs-studio libfdk-aac0 libluajit-5.1-2 libluajit-5.1-common libxcb-xinerama0

你应该直接得到原始尺寸。