我尝试在ubuntu 14.04 LTS上安装KDE桌面。 在安装结束时，我收到了这个错误：
Processing triggers for install-info (5.2.0.dfsg.1-2) ...
/etc/environment: line 3: $: command not found
dpkg: error processing package install-info (--unpack):
subprocess installed post-installation script returned error exit status 127
Processing triggers for fontconfig (2.11.0-0ubuntu4.2) ...
Errors were encountered while processing:
install-info
E: Sub-process /usr/bin/dpkg returned an error code (1)
在其他窗口中显示消息：
Processing triggers for fontconfig (2.11.0-0ubuntu4.2) ...
Errors were encountered while processing:
install-info
E: Sub-process /usr/bin/dpkg returned an error code (1)
我的linux版本是：
cat /proc/version
Linux version 3.16.0-77-generic (buildd@lgw01-09)
(gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) )
#99~14.04.1-Ubuntu SMP Tue Jun 28 19:17:10 UTC 2016
这里有一些关于机器的数据：
ar-it07201
description: Space-saving Computer
product: OptiPlex 9020 (OptiPlex 9020)
vendor: Dell Inc.
version: 01
serial: CRMVN22
width: 64 bits
cpu处理器：
*-cpu
description: CPU
product: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
vendor: Intel Corp.
physical id: 3a
bus info: cpu@0
version: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
slot: SOCKET 0
size: 3888MHz
capacity: 3888MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64
....
*-memory
description: System Memory
physical id: 3e
slot: System board or motherboard
size: 16GiB