test@test:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
fcitx-libs-gclient libgif4 libgnome-desktop-2-17 libmono-web4.0-cil
linux-headers-3.13.0-32 linux-headers-3.13.0-32-generic
linux-image-3.13.0-32-generic linux-image-extra-3.13.0-32-generic
Use 'sudo apt autoremove' to remove them.
The following packages have been kept back:
libparse-debianchangelog-perl
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up sudo (1.8.16-0ubuntu1.1) ...
chown: changing ownership of '/etc/sudoers': Operation not permitted
dpkg: error processing package sudo (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of ubuntu-minimal:
ubuntu-minimal depends on sudo; however:
Package sudo is not configured yet.

dpkg: error processing package ubuntu-minimal (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
sudo
ubuntu-minimal
E: Sub-process /usr/bin/dpkg returned an error code (1)

把下面指令 複製 貼進終端機 執行
ls -al /etc/sudoers
把結果直接 選取/複製 貼上來

结果如下：
test@test:~$ ls -al /etc/sudoers
-r--r----- 1 root root 1112 4月 16 2014 /etc/sudoers

1. 這個權限 應該沒錯
1-1. 1112 好像大了些 你有修改 /etc/sudoers 過嗎 ?

2. 把下面指令 複製 貼進終端機 執行
cat /etc/group | grep sudo
把結果直接 選取/複製 貼上來

後續貼文 轉到
viewtopic.php?f=180&t=478216

那个也是我发的贴，我想升级到16.04会不会解决这个问题，结果还是一样

我把最新的更新信息，放到另外那个帖子里了