Linux 基础

切换多用户虚拟终端 ctrl+alt+Fn

pts 右击打开的默认用户啊

：0 图形界面默认登陆的用户

ttyn ：命令行模式登陆的用户

$ 普通用户

# 管理员

命令： man.linuxde.net（中文命令检索）

id

who

whoami

date

date -s ‘2017-05-24 10:11:11‘

cal

clear = Ctrl+L

su

passwd

echo ‘ads247‘ | passwd --stdin zhangwei

man

Linux 命令格式

命令 + 选项 + 参数

cd

alias

which

type

scsi disk a (sda)

mkdir

touch

vi
rm

rm -rf

tree

ctrl + a e 当前命令的首尾

html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video { margin: 0; padding: 0; border: 0 }
body { font-family: Helvetica, arial, freesans, clean, sans-serif; font-size: 14px; line-height: 1.6; color: #333; background-color: #fff; padding: 20px; max-width: 960px; margin: 0 auto }
body>*:first-child { margin-top: 0 !important }
body>*:last-child { margin-bottom: 0 !important }
p,blockquote,ul,ol,dl,table,pre { margin: 15px 0 }
h1,h2,h3,h4,h5,h6 { margin: 20px 0 10px; padding: 0; font-weight: bold }
h1 tt,h1 code,h2 tt,h2 code,h3 tt,h3 code,h4 tt,h4 code,h5 tt,h5 code,h6 tt,h6 code { font-size: inherit }
h1 { font-size: 28px; color: #000 }
h2 { font-size: 24px; border-bottom: 1px solid #ccc; color: #000 }
h3 { font-size: 18px }
h4 { font-size: 16px }
h5 { font-size: 14px }
h6 { color: #777; font-size: 14px }
body>h2:first-child,body>h1:first-child,body>h1:first-child+h2,body>h3:first-child,body>h4:first-child,body>h5:first-child,body>h6:first-child { margin-top: 0; padding-top: 0 }
a:first-child h1,a:first-child h2,a:first-child h3,a:first-child h4,a:first-child h5,a:first-child h6 { margin-top: 0; padding-top: 0 }
h1+p,h2+p,h3+p,h4+p,h5+p,h6+p { margin-top: 10px }
a { color: #4183C4; text-decoration: none }
a:hover { text-decoration: underline }
ul,ol { padding-left: 30px }
ul li>:first-child,ol li>:first-child,ul li ul:first-of-type,ol li ol:first-of-type,ul li ol:first-of-type,ol li ul:first-of-type { margin-top: 0px }
ul ul,ul ol,ol ol,ol ul { margin-bottom: 0 }
dl { padding: 0 }
dl dt { font-size: 14px; font-weight: bold; font-style: italic; padding: 0; margin: 15px 0 5px }
dl dt:first-child { padding: 0 }
dl dt>:first-child { margin-top: 0px }
dl dt>:last-child { margin-bottom: 0px }
dl dd { margin: 0 0 15px; padding: 0 15px }
dl dd>:first-child { margin-top: 0px }
dl dd>:last-child { margin-bottom: 0px }
pre,code,tt { font-size: 12px; font-family: Consolas, "Liberation Mono", Courier, monospace }
code,tt { margin: 0 0px; padding: 0px 0px; white-space: nowrap; border: 1px solid #eaeaea; background-color: #f8f8f8 }
pre>code { margin: 0; padding: 0; white-space: pre; border: none; background: transparent }
pre { background-color: #f8f8f8; border: 1px solid #ccc; font-size: 13px; line-height: 19px; overflow: auto; padding: 6px 10px }
pre code,pre tt { background-color: transparent; border: none }
kbd { background-color: #DDDDDD; background-image: linear-gradient(#F1F1F1, #DDDDDD); background-repeat: repeat-x; border-color: #DDDDDD #CCCCCC #CCCCCC #DDDDDD; border-style: solid; border-width: 1px; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; line-height: 10px; padding: 1px 4px }
blockquote { border-left: 4px solid #DDD; padding: 0 15px; color: #777 }
blockquote>:first-child { margin-top: 0px }
blockquote>:last-child { margin-bottom: 0px }
hr { clear: both; margin: 15px 0; height: 0px; overflow: hidden; border: none; background: transparent; border-bottom: 4px solid #ddd; padding: 0 }
table th { font-weight: bold }
table th,table td { border: 1px solid #ccc; padding: 6px 13px }
table tr { border-top: 1px solid #ccc; background-color: #fff }
table tr:nth-child(2n) { background-color: #f8f8f8 }
img { max-width: 100% }