sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak #備份

sudo  vim  /etc/apt/sources .list  #修改

sudo  apt-get update  #更新列表

 

阿里源，將默認的源全部刪除掉

deb http: //mirrors .aliyun.com /ubuntu/  trusty main restricted universe multiverse

deb http: //mirrors .aliyun.com /ubuntu/  trusty-security main restricted universe multiverse

deb http: //mirrors .aliyun.com /ubuntu/  trusty-updates main restricted universe multiverse

deb http: //mirrors .aliyun.com /ubuntu/  trusty-proposed main restricted universe multiverse

deb http: //mirrors .aliyun.com /ubuntu/  trusty-backports main restricted universe multiverse

deb-src http: //mirrors .aliyun.com /ubuntu/  trusty main restricted universe multiverse

deb-src http: //mirrors .aliyun.com /ubuntu/  trusty-security main restricted universe multiverse

deb-src http: //mirrors .aliyun.com /ubuntu/  trusty-updates main restricted universe multiverse

deb-src http: //mirrors .aliyun.com /ubuntu/  trusty-proposed main restricted universe multiverse

deb-src http: //mirrors .aliyun.com /ubuntu/  trusty-backports main restricted universe multiverse