change directory using shell script

I. Logical judgments in shell scriptsIn the shell script, many will logically judge, judge a certain value, judge a file, or a directory, we do some action against the result of the judgment, if there is no judgment, there is no way to do some

[This is my own study notes, welcome reprint, but please specify the source:http://blog.csdn.net/jesson20121020] Take a look at some of the variables in the shell today. Variable Type:There are several variables in the shell:1) Local

--book author Shenmon reprint please specify the source Content Introduction Objective What is a shell? Our first shell script Run the shell script Summarize Part V Third lesson preview: variable in hand, shell not

- 20.1 shell script describes the- 20.2 shell script structure and executes- 20.3 date command usage- 20.4 shell the variables in the script #  20.1 shell Script Introduction-  shell is a scripting language    attention

I. Basic Shell syntax1. VariablesBy convention, Shell variables are composed of uppercase letters and underscores (_). There are two types of Shell variables:Environment VariableEnvironment variables can be transmitted from the parent process to the

Shell programming BASICS (from the UBUNTU Forum) (12:49:20) Reprinted Tags:Shell Classification: programming (C ++) Http://wiki.ubuntu.org.cn/Shell%E7%BC%96%E7%A8%8B%E5%9F%BA%E7%A1%80 Why shell programming?In Linux, although there

Document directory Variable assignment and reference If sentence & | Operator Case statement Select statement ============================================== = While/for Loop Quotation marks Binary to decimal conversion Circular file copy

What is the Q:1 shell script and is it required? A: A shell script is a text file that contains one or more commands. As a system administrator, we often need to use multiple commands to complete a task, and we can add all of these commands in a

Knowledge before learning shell scripts1) Record command historyThe commands we've knocked on, Linux will be recorded, and presets can record 1000 historical commands. These commands are saved in the. bash_history file in the user's home directory.

Create a scriptThere are many different shells in Linux, but usually we use Bash (Bourne again shell) for Shell programming because bash is free and easy to use. So the script I've provided in this article is all about using bash (but in most cases