摘要： Up to this point,we have seen a series of mysterious commands,each with its own mysterious options and arguments.In this chapter,we will attempt(试图) t 阅读全文

摘要： At this point,we are ready for some real work!This chapter will introduce the following commands: cp:Copy files and directories mv:move/rename files a 阅读全文

摘要： Now that we know how to move around(equal nagtive) the file system,it's time for a guided tour of our Linux system.Before we start however,we're going 阅读全文

摘要： The first thing we need to learn to do (desides just typing) is how to navigate the file system on our Linux system.In this chapter we will introduce 阅读全文

摘要： shell When we say command line,we are really reffering to the shell.Shell is a programm that takes keyboard commands and passes them to the operating 阅读全文

摘要： Robert:I am a new student.My name is Robert Sophie:Nice to meet you.My name is Sophie Robert:Are you french? Sophie:Yes,I am.Are you french ...too? Ro 阅读全文

摘要： Good morning Good morning , Mr Black This is SuSan,......a new student ,she is a French SuSan,this is Hans,he's German Nice to meet you,SuSan. ...This 阅读全文

摘要： My coat and my umbrella ,please!Here it is my ticket. Thank you,sir! Number 5. Here's your coat and your umbrella. This is not my umbrella. Sorry,sir. 阅读全文

摘要： Excuse me! Yes? Is this your handbag? Pardon? Is this your handbag? Yes,it is.Thank you very much! 阅读全文

摘要： 整数测试： -le:小于等于 -lt:小于 -ge:大于等于 -gt:大于 -eq:等于 -ne:不等于 字符测试： ==：测试是否相等，相等为真，不等为假 !=:测试是否不等，不等为真，等为假 -n string:测试字符串是否为空，空则真，不空则假 -z string:测试指定字符串是否不空，不 阅读全文