ubuntu12.04初始操作

本文详细介绍了如何更新Ubuntu源、修改默认编辑器、添加用户并设置权限、以及默认启动级别的调整等Linux系统管理与配置的基本操作。

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1. 更新163源
cp /etc/apt/sources.list /etc/apt/sources.list.save

vi /etc/apt/sources.list

	deb http://mirrors.163.com/ubuntu/ precise main restricted
	deb-src http://mirrors.163.com/ubuntu/ precise main restricted
	deb http://mirrors.163.com/ubuntu/ precise-updates main restricted
	deb-src http://mirrors.163.com/ubuntu/ precise-updates main restricted
	deb http://mirrors.163.com/ubuntu/ precise universe
	deb-src http://mirrors.163.com/ubuntu/ precise universe
	deb http://mirrors.163.com/ubuntu/ precise-updates universe
	deb-src http://mirrors.163.com/ubuntu/ precise-updates universe
	deb http://mirrors.163.com/ubuntu/ precise multiverse
	deb-src http://mirrors.163.com/ubuntu/ precise multiverse
	deb http://mirrors.163.com/ubuntu/ precise-updates multiverse
	deb-src http://mirrors.163.com/ubuntu/ precise-updates multiverse
	deb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
	deb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
	deb http://mirrors.163.com/ubuntu/ precise-security main restricted
	deb-src http://mirrors.163.com/ubuntu/ precise-security main restricted
	deb http://mirrors.163.com/ubuntu/ precise-security universe
	deb-src http://mirrors.163.com/ubuntu/ precise-security universe
	deb http://mirrors.163.com/ubuntu/ precise-security multiverse
	deb-src http://mirrors.163.com/ubuntu/ precise-security multiverse
apt-get update
apt-get upgrade


2. 修改默认编辑器
update-alternatives --config editor
visudo


3. 添加用户并修改权限
adduser git
usermod -G sudo -a git 


4. 默认启动级别

第一种:
如果有/etc/inittab文件,那么修改这个文件中的id:N:initdefault:
第二种
没有/etc/inittab文件,那么就要修改/etc/init/rc-sysinit.conf来改变env DEFAULT_RUNLEVEL=2


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