Shell Script Functions How to define a function Varibale scopes Return statement break vs exit vs return How to call functions present in another script Linux Commands Help man, help, apropos, whereis, whatis,
Linux Command Line and Shell Scripting Bible__第11章 第11章 处理用户输入 向shell脚本传递数据的最基本方式是使用:命令行参数。 位置参数:$0为程序名称,$1为第一个参数,$2为第二个参数,……直到$9为第9个参数。第9个变量之后,必须使用大括号将变量括起来,如${10}。 读取程序名称:传递给变量$0的字符实...
Thisismy second command I can even putinother commands besides echo; ls:/home/_driver/.b*: No suchfileordirectory shijianzhongdeMacBook-Pro:part_12 shijianzhong$ cat test3.sh #! /bin/bash testuser=_driver ifgrep $testuser/etc/passwd# 如果匹配不到就不会执行then语句 then echo"This is m...
such as distribution, LiveCD, and GNU when looking at Linux packages and been confused. Trying to wade through the world of Linux for the first time can be a tricky experience. This chapter will take some of the mystery out of the Linux system before we start working on commands and ...
Vi Editor: Learn the most commonly used Vi editor commands. Shell Expansion: Understand the different types of shell expansion, including brace expansion, tilde expansion, parameter expansion, command substitution, arithmetic expansion, process substitution, word splitting, filename expansion, and quotes....
learning. This book is a fairly comprehensive resource on the Linux command line and shell commands. By the time you have completedLinux Command Line and Shell Scripting Bible,you will be well prepared to write your own shell scripts that can automate practically any task on your Linux system....
Chapter 3 Basic bash Shell Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 ...
Chapter 10: More Structured Commands.Chapter 11: Handling User Input.Chapter 12: Presenting Data.Chapter 13: Script Control.Part III Advanced Shell Scripting.Chapter 14: Creating Functions.Chapter 15: Adding Color to Scripts.Chapter 16: Introducing sed and gawk.Chapter 17: Regular Expressions.Chapter...
shell 脚本是写在文件中的一系列命令;shell 会从文件中读取这些命令,就像在终端中输入命令一样。 11.1 Shell Script Basics(Shell 脚本基础) Bourne shell scripts generally start with the following line, which indicates that the /bin/sh program should execute the commands in the script file. (Make sure...
【中商原版】Linux命令、编辑器与Shell编程(第4版) 英文原版 Linux Commands, Editors, and Shell Programming Mark G. Sobell,null