囩仴煳

linux文件系统，详细分析linux文件系统。

国外精美动态PPT模板-----个人备份

软件估算--英文版，Cost and Schedule Estimating，

1. Which of the following is a common characteristic of most project life cycle descriptions? A. Cost and staffing are low at the start, higher towards the end, and drop rapidly as the project nears completion. B. The probability of successfully completing the project is highest at the start of the project. C. Stakeholders have the most influence on the final characteristics of the product at the end of the project. D. a and b 以下哪个是大多数项目生命周期描述的共同特征？ A. 成本和人员在开始时低，随着进程增高，并在项目接近完成时迅速降低。 B. 项目开始时，成功完成项目的概率最高。 C. 项目利害关系者在项目结束时对产品的最终特性影响力最大。 D. a 和 b

UNIX.Shell编程24学时教程.pdf

本书共分五部分，详细介绍了shell编程技巧，各种UNIX命令及语法，还涉及了UNIX下的文字处理以及少量的系统管理问题。本书内容全面、文字简洁流畅，适合Shell编程人员学习、参考。

shell脚本编写基础,ExpectCourse.pdf,高级Bash脚本编程指南.pdf.chm及中英两本 毫无疑问,UNIX/Linux 最重要的软件之一就是 shell,目前最流行的 shell 被称为 Bash(Bourne Again Shell),几乎所有的 Linux 和绝大部分的 UNIX 都可以使用 Bash。作为系 统与用户之间的交互接口,shell 几乎是你在 UNIX 工作平台上最亲密的朋友,因此,学好 shell,是学习 Linux/UNIX 的的开始,并且它会始终伴随你的工作学习。

新概念Linux学习电子书籍，给大家一个离线认识Linux与学习Linux的平台。 　　本书是为广大Linux学习者制做的，本书内容基础，语言简短简洁。 　　在Linux的天空找到自我，找到知识，从在Linux世界驰骋系统教程认识起。 　　本书是CHM格式制做的，所以不再有任何的更新版本，为更好的Linux知识，本书还特地的加入了一些Linux知识，附加知识。

linux 基础，课件 Linux 系统结构 文件存储设备 Linux 文件系统 Linux用户类型 文件基本操作 重定向 管道 应用包格式 常用命令

在网络的各层中存在着许多协议，它是定义通过网络进行通信的规则，接收方的发送方同层的协议必须一致，否则一方将无法识别另一方发出的信息，以这种规则规定双方完成信息在计算机之间的传送过程。下面就对网络协议规范作个概述

Whar is it? 1. A language for automating interactive programs 2.A TCL extension 3.Public domain 4.Named after its most useful command four/fore most important commands a.spawn----start a program b.expect---wait for some input c.send---send something to the program d.interact---allow user interaction through

本书《Ubuntu 参考手册》的目的是对整个 Ubuntu 系统作一个全面的介绍,提供一本 “安装之後的”用户使用手册。

Your brain on Design Patterns. Here you are trying to learn something, while here your brain is doing you a favor by making sure the learning doesn’t stick. Your brain’s thinking, “Better leave room for more important things, like which wild animals to avoid and whether naked snowboarding is a bad idea.” So how do you trick your brain into thinking that your life depends on knowing Design Patterns?

This book will help you identify and overcome prevalent, recurring roadblocks to successful software development. AntiPatterns clearly define software mistakes that most of us make frequently. In fact, most of us could achieve ISO 9001 with our consistency! AntiPatterns also provide solutions: How to fix existing problems and how to avoid repeated mishaps in the future. In short, AntiPatterns describe and solve real−world problems.

The Ubuntu Server Guide contains information on how to install and configure various server applications on your Ubuntu system to fit your needs. It is a step-by-step, task-oriented guide for configuring and customizing your system. This manual discusses many intermediate topics such as the following: • Network Configuration • Apache2 Configuration • Databases • Windows Networking This manual is divided into the following main categories: • Installation • Package Management • Networking • Windows Networking This guide assumes you have a basic understanding of your Ubuntu system. If you need detailed help installing Ubuntu, refer to the Ubuntu Installation Guide.

由于find具有强大的功能，所以它的选项也很多，其中大部分选项都值得我们花时间 来了解一下。即使系统中含有网络文件系统( NFS)，find命令在该文件系统中同样有效， 只你具有相应的权限。 在运行一个非常消耗资源的find命令时，很多人都倾向于把它放在后台执行，因为遍 历一个大的文件系统可能会花费很长的时间(这里是指30G字节以上的文件系统)。

1. Tcl Fundamentals ............................................. 1 Getting Started ............................................................ 1 Tcl Commands ............................................................. 2 Hello World .................................................................. 3 Variables ......................................................................3 Command Substitution ................................................ 4 Math Expressions ........................................................ 4 Backslash Substitution ................................................ 6 Double Quotes ............................................................. 7 Procedures ................................................................... 7 A While Loop Example .................................................. 8 Grouping And Command Substitution ....................... 10 More About Variable Substitution .............................. 11 Substitution And Grouping Summary ........................ 11 Fine Points ................................................................. 12 Comments ................................................................. 13 Command Line Arguments ......................................... 13 Reference ................................................................... 14 Backslash Sequences ........................................... 14 Arithmetic Operators ........................................... 14 Built-in Math Functions ...................................... 15 Core Tcl Commands ............................................. 15 Predefined Variables ............................................ 18 2. Strings and Pattern Matching ......................... 19 The string Command .................................................. 19 Strings And Expresssions ........................................... 20 The append Command ............................................... 21 The format Command ................................................ 21 The scan Command ................................................... 23 String Matching ......................................................... 24 Regular Expressions .................................................. 25 The regexp Command ................................................ 26 The regsub Command ................................................ 28 Created: May 9, 1994 —bookTOC.doc—Copyright Prentice Hall—DRAFT: 1/13/95 ii 3. Tcl Data Structures .........................................29 More About Variables ................................................. 29 The unset command ............................................ 30 Using info to find out about variables ................... 30 Tcl Lists ..................................................................... 31 Constructing Lists: list, lappend, and concat .............. 32 Getting List Elements: llength, lindex, and lrange ....... 33 Modifying Lists: linsert and lreplace ........................... 34 Searching Lists: lsearch ............................................. 34 Sorting Lists: lsort ...................................................... 35 The split And join Commands .................................... 35 Arrays ........................................................................ 36 The array Command .................................................. 37 Environment Variables ............................................... 38 Tracing Variable Values ............................................. 39 4. Control Flow Commands .................................41 If Then Else ................................................................ 42 Switch ........................................................................ 43 Foreach ...................................................................... 44 While ......................................................................... 45 For ............................................................................. 46 Break And Continue ................................................... 46 Catch ......................................................................... 46 Error .......................................................................... 48 Return ....................................................................... 49 5. Procedures and Scope .....................................51 The proc Command .................................................... 51 Changing command names with rename .................... 52 Scope ......................................................................... 53 The global Command ................................................. 53 Use Arrays for Global State ........................................ 55 Call By Name Using upvar .......................................... 55 Passing arrays by name ....................................... 56 The uplevel Command ................................................ 57 6. Eval ................................................................59 Eval And List ............................................................

嵌入式系统的C语言.doc,译自《C for Embedded Systems》讲稿 刘永重 译

介绍Vim的帮助系统. 本文将使你了解到Vim的帮助中解讲每个命令时的假设环境. Vim的文档由两部分组成: 1. 用户手册面向问题, 由浅入深进行讲解. 可以象读一本书一样从头至尾进行学习.参考手册详述Vim方方面面的细节. 2. 这些手册中用到的一些约定的记法可以在|notation|中找到.

innotek VirtualBox is a family of virtual machine products targeting desktop com- puters, enterprise servers and embedded systems. Due to its modular architecture, VirtualBox can be deployed in any environment where x86 systems are to be virtual- ized on x86 systems.

NASM 是一个为可移植性与模块化而设计的一个 80x86 的汇编器。它支持相当多 的目标文件格式,包括 Linux 和'NetBSD/FreeBSD','a.out','ELF','COFF',微软 16 位的'OBJ'和'Win32'。它还可以输出纯二进制文件。它的语法设计得相当的简 洁易懂,和 Intel 语法相似但更简单。它支持'Pentium','P6','MMX','3DNow!', 'SSE' and 'SSE2'指令集

 Linux提供了大量的命令，利用它可以有效地完成大量的工作，如磁盘操作、文件存取、目录操作、进程管理、文件权限设定等。所以，在Linux系统上工作离不开使用系统提供的命令。要想真正理解Linux系统，就必须从Linux命令学起，通过基础的命令学习可以进一步理解Linux系统。

TCＬ学习资料，其中包括如下内容： TCL语法 脚本、命令和单词符号 置换(substitution) 变量置换(variable subtitution) 命令置换(command substitution） 反斜杠置换(backslash substitution) 双引号和花括号 注释 变量 简单变量 数组 相关命令 set unset ......