我已经ubuntu-sdk安装了，/var/log/apt/history.log对此必须说一下：
Commandline: apt --no-install-recommends install ubuntu-sdk
Install: python3-simplejson:i386 (3.3.1-1ubuntu6, automatic), click-doc:i386 (0.4.43+16.04.20160203-0ubuntu3~0trusty1, automatic), libsybdb5:i386 (0.91-5, automatic), libjs-underscore:i386 (1.4.4-2ubuntu1, automatic), libxcb-xinerama0:i386 (1.10-2ubuntu1, automatic), libboost-program-options1.54.0:i386 (1.54.0-4ubuntu3.1, automatic), schroot-common:i386 (1.6.8-1ubuntu1.1, automatic), freetds-common:i386 (0.91-5, automatic), schroot:i386 (1.6.8-1ubuntu1.1, automatic), xserver-xephyr:i386 (1.15.1-0ubuntu2.7, automatic), ubuntu-sdk:i386 (1.126.2~0ubuntu1~trusty2), intltool:i386 (0.50.2-2, automatic), devscripts:i386 (2.14.1ubuntu0.1, automatic), dh-make:i386 (0.63, automatic), libpq5:i386 (9.3.12-0ubuntu0.14.04, automatic), mysql-common:i386 (5.5.49-0ubuntu0.14.04.1, automatic), gdb-multiarch:i386 (7.7.1-0ubuntu5~14.04.2, automatic), libmysqlclient18:i386 (5.5.49-0ubuntu0.14.04.1, automatic), click-reviewers-tools:i386 (0.35-0~550~ubuntu14.04.1, automatic), fcitx-libs:i386 (4.2.8.3-3, automatic), python3-magic:i386 (5.14-2ubuntu3.3, automatic), python3-yaml:i386 (3.10-4ubuntu0.1, automatic), libbotan-1.10-0:i386 (1.10.5-1ubuntu1, automatic), libjs-sphinxdoc:i386 (1.2.2+dfsg-1ubuntu1.1, automatic), click-dev:i386 (0.4.43+16.04.20160203-0ubuntu3~0trusty1, automatic), libxcb-xf86dri0:i386 (1.10-2ubuntu1, automatic), ubuntu-sdk-ide:i386 (3.5.1~133+201604191700~ubuntu14.04.1)
显然，已经安装了依赖项。因此，我首先删除了该ubuntu-sdk包：
$ sudo apt-get remove --purge ubuntu-sdk
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
ubuntu-sdk*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 32.8 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 303883 files and directories currently installed.)
Removing ubuntu-sdk (1.126.2~0ubuntu1~trusty2) ...
好的，现在我尝试使用以下命令删除依赖项autoremove：
$ sudo apt-get autoremove --purge
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
嗯。。什么？Apt-getautoremove应该已经识别出需要删除的依赖包了，但是它却没有识别？
为什么会发生这种情况？autoremove删除依赖包后我该如何ubuntu-sdk删除它？
答案1
好的，我想我最好检查一下这个包的依赖项：
$ apt-cache depends ubuntu-sdk
ubuntu-sdk
Depends: ubuntu-sdk-ide
嗯...只有一个依赖项？让我们看看它说了什么：
$ apt-cache depends ubuntu-sdk-ide
ubuntu-sdk-ide
Depends: android-tools-adb
Depends: click
Depends: click-dev
Depends: click-doc
Depends: click-apparmor
Depends: cmake
Depends: intltool
Depends: python3
Depends: devscripts
Depends: dh-make
Depends: rsync
Depends: webapp-container
Depends: gdb-multiarch
Depends: click-reviewers-tools
Depends: phablet-tools
...
好的，这更像是...在这一点上，ubuntu-sdk单独删除与 OP 中的相同，但是当我尝试删除ubuntu-sdk两者时ubuntu-sdk-ide：
$ sudo apt-get remove --purge ubuntu-sdk ubuntu-sdk-ide
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
click-dev click-doc devscripts fcitx-libs freetds-common gdb-multiarch
intltool libboost-program-options1.54.0 libbotan-1.10-0 libjs-sphinxdoc
libjs-underscore libmysqlclient18 libpq5 libsybdb5 libxcb-xinerama0
mysql-common schroot schroot-common
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
ubuntu-sdk* ubuntu-sdk-ide*
0 upgraded, 0 newly installed, 2 to remove and 1 not upgraded.
After this operation, 149 MB disk space will be freed.
Do you want to continue? [Y/n]
...这看起来确实是正确的（因为我之前已经手动安装了一些依赖项...）无论如何，希望就是这样......