[Linux] 学习笔记第一篇——安装

环境：CentOS6.3 minimal

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1、下载

镜像地址：http://mirrors.stuhome.net/centos/6.3/isos/x86_64/

CentOS-6.3-x86_64-netinstall.iso

CentOS-6.3-x86_64-minimal.iso

CentOS-6.3-x86_64-bin-DVD1.iso

CentOS-6.3-x86_64-bin-DVD2.iso

CentOS-6.3-x86_64-LiveCD.iso

CentOS-6.3-x86_64-LiveDVD.iso

2、安装

安装环境：Oracle VM VirtualBox 4.2.6

3、注销、关机和重启

注销

$ logout

$ Ctrl + D

关机

$ poweroff

重启

$ reboot

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注：shutdown命令可以关闭所有程序，依照用户的需要，重新启动或关机。

1、立即关机：-h 参数让系统立即关机。范例如下:

$ shutdown –h now ← 要求系统立即关机

2、指定关机时间：time 参数可指定关机的时间，或设置多久时间后运行shutdown命令，范例如下:

$ shutdown now ← 立刻关机

$ shutdown +5 ← 5分钟后关机

$ shutdown 10:30 ← 在10:30时关机

3、关机后自动重启:-r 参数设置关机后重新启动。范例如下:

$ shutdown -r now ← 立刻关闭系统并重启

$ shutdown -r 23:59 ← 指定在23:59时重启动

Usage: shutdown [OPTION]... TIME [MESSAGE]

Bring the system down.

Options:

-r reboot after shutdown

-h halt or power off after shutdown

-H halt after shutdown (implies -h)

-P power off after shutdown (implies -h)

-c cancel a running shutdown

-k only send warnings, don't shutdown

-q, --quiet reduce output to errors only

-v, --verbose increase output to include informational messages

--help display this help and exit

--version output version information and exit

TIME may have different formats, the most common is simply the word 'now' which

will bring the system down immediately. Other valid formats are +m, where m is

the number of minutes to wait until shutting down and hh:mm which specifies the

time on the 24hr clock.