使用apt-get安装之前，最好sudo apt-get update一下，这样子会减少一些need dependencies或unable to locate the package的尴尬错误。
网络有可能是个问题呀，有时候不行的话多update几次，我的电脑已经FQ了，之前安装的时候没有出现这个问题一遍过，但是今天在另外一台电脑上搭建的时候，基本上每次apt都要update一下，也是醉了~
deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse # deb cdrom:[Ubuntu 14.04 _Trusty Tahr_ - Release i386]/ Trusty main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://gb.archive.ubuntu.com/ubuntu/ trusty main restricted deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://gb.archive.ubuntu.com/ubuntu/ trusty-updates main restricted deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://gb.archive.ubuntu.com/ubuntu/ trusty universe deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty universe deb http://gb.archive.ubuntu.com/ubuntu/ trusty-updates universe deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://gb.archive.ubuntu.com/ubuntu/ trusty multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty multiverse deb http://gb.archive.ubuntu.com/ubuntu/ trusty-updates multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty-updates multiverse ## Uncomment the following two lines to add software from the 'backports' ## repository. ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. deb http://gb.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. This software is not part of Ubuntu, but is ## offered by Canonical and the respective vendors as a service to Ubuntu ## users. deb http://archive.canonical.com/ubuntu trusty partner deb-src http://archive.canonical.com/ubuntu trusty partner deb http://security.ubuntu.com/ubuntu trusty-security main restricted deb-src http://security.ubuntu.com/ubuntu trusty-security main restricted deb http://security.ubuntu.com/ubuntu trusty-security universe deb-src http://security.ubuntu.com/ubuntu trusty-security universe deb http://security.ubuntu.com/ubuntu trusty-security multiverse deb-src http://security.ubuntu.com/ubuntu trusty-security multiverse ## Medibuntu - Ubuntu 14.04 "Trusty Tahr" ## Please report any bug on https://bugs.launchpad.net/medibuntu/ deb http://packages.medibuntu.org/ trusty free non-free deb-src http://packages.medibuntu.org/ trusty free non-free # Google software repository deb http://dl.google.com/linux/deb/ stable non-free deb http://ppa.launchpad.net/dhor/myway/ubuntu trusty main deb-src http://ppa.launchpad.net/dhor/myway/ubuntu trusty main