现在做什么？安装后立即更新

Question

Configuration file '/etc/psd.conf'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : start a shell to examine the situation
 The default action is to keep your current version.
*** psd.conf (Y/I/N/O/D/Z) [default=N] ? n 

1421086511166   addons.repository   WARN    Unknown type id when parsing addon: 5
1421086511170   addons.repository   WARN    Unknown type id when parsing addon: 5
1421086512463   addons.update-checker   WARN    Update manifest for {972ce4c6-7e08-4474-a285-3208198ce6fd} did not contain an updates property
1421086512713   addons.update-checker   WARN    Update manifest for ubufox@ubuntu.com did not contain an updates property

No bp log location saved, using default.
[000:000] Cpu: 6.37.5, x4, 2399Mhz, 3753MB
[000:000] Computer model: Not available
[000:000] Browser XEmbed support present: 1
[000:000] Browser toolkit is Gtk2.
[000:001] Using Gtk2 toolkit

Answer 1

这意味着包更新包含更新版本的配置文件，但包管理器不想覆盖您对旧版本所做的更改。因此它调用程序ucf(1)，让您可以选择

1. 覆盖旧文件（N或O）或
2. 保留旧文件（Y或I）。

在这两种情况下，另一个版本将保存到带有各自后缀*.ucf-old或的文件中*.ucf-new，这使您有机会在以后检查差异并根据需要更改、还原和/或更新内容。*.ucf-dist保存先前包版本中配置文件的原始内容（在您更改之前）。

最后两个选项（D和Z）允许您在做出决定之前检查更改或更大的“情况”。当您退出差异查看器或 shell 时，您将返回到相同的对话框。