[me@linuxbox ~]$ echo this is a test this is a test shell 会对echo进行单词分割(word splitting)去除多余的空白. [me@linuxbox ~]$ echo The total is $100.00 The total is 00.00 因为$1是一个未定义的变量,所以参数扩展会将$1替换为空字符串. 引用的目的就是由选择性的避免不想要的扩展. 一.双引号(Double Quotes) 将text放在双引号内时,所有特殊…

Linux用户以及权限相关命令 查看身份 id:Display user identity. 这个命令的输出会显示uid,gid和用户所属的组. uid即user ID,这是账户创建时被赋予的. gid是primary group ID,是主要的组的id.当然这个用户也可以属于其他更多的组. 用户账户信息被定义在 /etc/passwd文件中,组信息被定义在/etc/group文件中. chmod 命令名称:chmod 命令英文原意:change the permissions mode of…

<The Linux Command Line> 读书笔记02 关于命令的命令 命令的四种类型 type type—Indicate how a command name is interpreted. type命令:展示命令的类型. which which—Display which executable program will be executed. which命令:展示可执行命令的位置. 因为可执行命令有可能会有多个版本,所以有必要根据位置来判断究竟是哪个. which仅对可执行程序…

<The Linux Command Line> 读书笔记01 基本命令介绍 1. What is the Shell? The Shell is a program that takes keyboard commands and passes them to the operating system to carry out. 提示符 $被称作shell prompt,它表明shell准备好接收输入. 通常是包含了你的用户名和机器名(username@machinename),之后是当前的…

Most of this note comes from the Beginning the Linux Command Line, Second Edition by Sander van Vugt The only reason why many administrators are using a graphical interface on Linux, is because it allows them to run many terminal windows simultaneous…

Linux Command Line 解析 0 处理模型 Linux kernel的启动包括很多组件的初始化和相关配置,这些配置参数一般是通过command line进行配置的.在进行后续分析之前,先来理解一下command line的处理模型: 要处理的对象是一个字符串,其中包含了各种配置信息,通常各个配置之间通过空格进行分离,每个配置的表达形式是如:param=value1,value2 或者很简单就是一个rw. 那么kernel就需要提供对这些参数进行处理的处理函数列表.根据参数的作用以及…

When you are using Linux command line frequently, using the history effectively can be a major productivity boost. In fact, once you have mastered the 15 examples that I’ve provided here, you’ll find using command line more enjoyable and fun. 1. Disp…

I passionately enjoy working with commands as they offer more control over a Linux system than GUIs(Graphical User Interfaces) applications, therefore am always on the look out to discover or figure out interesting ways and ideas to make Linux so eas…

http://book.haoduoshipin.com/tlcl/book/zh/ 本书是 The Linux Command Line 的中文版, 为大家提供了多种不同的阅读方式. 中英文双语版-html 中英文双语版-PDF-2015-01-16 中文版-html 中文版-PDF-2015-01-16 中文版-EPUB 欢迎大家参与本书的翻译: github 本书的翻译由happypeter发起,Billie主力翻译,并社区协同努力 (Github Contributors)…

Notes on The Linux Command Line (by W. E. Shotts Jr.) edited by Gopher 感觉博客园是不是搞了什么CSS在里头--在博客园显示效果挺蛋疼的...这本书相当棒,建议一读 File, file systems and commands ls -a(all) -d(directory) -h(human-readable) less (show file content) FHS /bin: Contains binaries (pr…