E: Sub-process /usr/bin/dpkg returned an error code問題的解決辦法
在安裝軟件時會出現類似如下錯誤（debian系統）：
[plain]
Errors were encountered while processing:
udev
mountall
plymouth
dbus
plymouth-theme-ubuntu-text
E: Sub-process /usr/bin/dpkg returned an error code (1)
解決方法如下：
[plain]
cd /var/lib/dpkg
sudo mv info info.bak
sudo mkdir info
apt-get --reinstall install udev mountall plymouth dbus
