Shell的介绍

中文翻译
Shell的介绍(中文3000字,英文2200字)
在本章节，你将会了解到：
1)Unix shell的历史
2)不再惧怕使用命令行界面
3)怎样寻求帮助及查询自动完成
4)使用shell真的很棒！
1.基本说明
Shell是一款为用户提供基于文本的界面的软件，用户可以由此来对电脑进行操作。Shell也被称为“命令解释器”。事实上，shell执行由用户键入的指令。基本上有两种操作电脑的方式：一是使用shell，通过键入指令来实现，二是通过图形用户界面（GUI），包括按钮、菜单，或者更现代化的鼠标支持等等。系统通常都提供这两种界面，但是最好学会让它们形成互补。

外文原文
Introduction to shell
In this chapter, you will learn:
1)About shells in Unix history
2)Not to be afraid to use the Command Line Interface
3)How to find help and discover autocompletion
4)That using the shell is great, so great !
1 Basic definition
A shell is a software providing a text-based interface to users. Thereby, they can use their computers.It is also called "command interpreter". Indeed, the shell executes commands that the user types. Basically, there is two way to really use a computer: with a shell, by typing commands, or by a Graphical UserInterface (GUI), including buttons, menu, or more recently mouse support, ect... These two interfaces are often opposed, but you better may consider them as complementary.