如何配置apt-get默認安裝suggeted packages

在使用apt-get安裝包的時候，常常會遇到apt-get會建議的包，但實際上卻木有安裝：

root@Pure:/etc/puppet/modules/apache# apt-get install ipython
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  python-configobj python-simplegeneric
Suggested packages:
  ipython-doc ipython-notebook ipython-qtconsole python-matplotlib python-zmq
The following NEW packages will be installed:
  ipython python-configobj python-simplegeneric
0 upgraded, 3 newly installed, 0 to remove and 388 not upgraded.
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需要讓apt-get默認下載推薦和建議的包，需要建立一個配置文件：/etc/apt/apt.conf：

APT::Install-Recommends "true";
APT::Install-Suggests "true";

然后在安裝的時候就會默認下載了。

如果不希望apt-get下載suggested的包：

apt-get --no-install-recommends install package