Linux系統初始化更新（更換阿里源）

1. centos6、7

修改linux配置

更換yum 更新源

mv /etc/yum.repos.d/centos-base.repo /etc/yum.repos.d/centos-base.repo.backup

wget -o /etc/yum.repos.d/centos-base.repo6.repo

yum clean all

yum makecache

更新系統

yum -y update

sudo yum list kernel -y

sudo yum update -y kernel

更新完成後，重啟系統。(讓新的核心版本生效)

重啟後，檢視核心版本：

源目錄位置：/etc/apt/sources.list

sudo apt-get update

sudo apt-get dist-upgrade

1.備份系統自帶源

mv /etc/apt/sources.list /etc/apt/sources.list.bak
2.修改/etc/apt/sources.list檔案
vim /etc/apt/sources.list 
加入如下內容
deb-src xenial main restricted #added by software-properties
deb xenial main restricted
deb-src xenial main restricted multiverse universe #added by software-properties
deb xenial-updates main restricted
deb-src xenial-updates main restricted multiverse universe #added by software-properties
deb xenial universe
deb xenial-updates universe
deb xenial multiverse
deb xenial-updates multiverse
deb xenial-backports main restricted universe multiverse
deb-src xenial-backports main restricted universe multiverse #added by software-properties
deb xenial partner
deb-src xenial partner
deb xenial-security main restricted
deb-src xenial-security main restricted multiverse universe #added by software-properties
deb xenial-security universe
deb xenial-security multiverse
3.更新生效
apt-get update

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