配置APT源

輸入命令 cd /etc/apt/ 進入改目錄后執(zhí)行l(wèi)s命令，會列出所以文件目錄，把sources.list就是你要編輯配置的源文件，先復(fù)制一份，然后重新編輯一份

然后就是刪掉sourceslist里面所以的東西，換成下面的內(nèi)容

deb https://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse

deb https://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse

deb https://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse

deb https://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse

deb https://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse

deb-src https://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse

deb-src https://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse

deb-src https://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse

deb-src https://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse

deb-src https://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse

保存后，執(zhí)行apt-get update命令，更新。