linux shell scripting tutorial for beginners

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Linux Shell script series tutorial (4): Add environment variables using functions

Linux Shell script series tutorial (4): Add environment variables using functions This article mainly introduces the Linux Shell script series (4): Adding environment variables using functions. This article introduces the knowledge of environment variables, the following des

Use Python script to implement a partial bash shell tutorial in Linux _python

complex code that makes it difficult for developers to read and modify them. Usually, its syntax and interpretation are not so flexible, and not intuitive. Its code is usually not used by other scripts. The code reuse rate in the script is very low, and the script usually solves some very specific problems. They generally do not support library features, such as HTML interpreters or processing HTTP request libraries, because libraries are generally only in the popular language and

Linux Shell script series tutorial (7): script debugging

Linux Shell script series tutorial (7): script debugging This article mainly introduces the Linux Shell script series (7): script debugging. This article describes the Bash built-in debugging and custom debugging functions. For more information, see I. debug the script Debug

Linux Shell script series tutorial (5): mathematical operations

Linux Shell script series tutorial (5): mathematical operations This article mainly introduces the Linux Shell script series (V): mathematical operations. This article describes how to use let ,(()) and [] for arithmetic operations, use expr for arithmetic operations, use bc

Code for deleting logs 7 days ago in linux (php + shell) _ PHP Tutorial

In linux, the code for deleting logs 7 days ago (php + shell ). PHP version: Copy the code as follows: *** delete logs 7 days ago * @ param $ logPath * functiondel7daysAgoLog ($ logPath) {if (empty ($ logPath) return; $ handleopendir ($ logPath); PHP version: The code is as follows: /*** Delete logs 7 days ago* @ Param $ logPath*/Function del7daysAgoLog ($ logPath ){If (empty ($ logPath) return;$ Handle

Linux Shell Script Tutorial series (vi): arrays and associative arrays

This article mainly introduces the Linux Shell Script series tutorial (vi): array and associative array, this article explained what is the array and associative array, the definition prints the ordinary array, the definition prints the associative array and so on content, needs the friend to be possible to refer to under One, array, and associative arrays An a

Excel_vba _ Programming Tutorial (full version), development environment, instance, function Daquan, SVN, Linux and shell Learning

Excel_vba _ Programming Tutorial (full version ): Http://wenku.baidu.com/view/5ba7837da26925c52cc5bf1d.html Excel VBA Development Environment VBE: Http://wenku.baidu.com/view/b18546e2524de518964b7d5a.html Excel VBA instance: Http://wenku.baidu.com/view/d46ba11614791711cc79177c.html VBA functions: Http://wenku.baidu.com/view/e1c7f4d63186bceb19e8bb06.html SVN command User Manual: Http://wenku.baidu.com/view/1ddc47d049649b6648d7475f.html Laruen

Linux Delete code for 7 days ago log (Php+shell) _php Tutorial

PHP Version: Copy CodeThe code is as follows: /** * Delete logs from 7 days ago * @param $logPath */ function Del7daysagolog ($logPath) { if (empty ($logPath)) return; $handle = Opendir ($logPath); while (($file = Readdir ($handle))!== false) { $pos = Strpos ($file, '. log '); if ($pos!== false (Strtotime ("1 week") > Fileatime ($logPath. $file)) { Unlink ($logPath. $file); } } } Shell version Copy CodeThe code is as follows: #!/bin/sh function

Linux Shell Script Tutorial series (ii): Detailed instructions for terminal printing

This article mainly introduces the Linux Shell Script series (ii): The terminal printing instructions, this article focuses on the echo terminal printing, printf terminal print two print out output command, the need for friends can refer to the Terminal printing A terminal is an interactive tool through which users can interact with the shell environment. Print

Run the shell command in php in linux to view the server's machine name_php tutorial

Run the shell command in php in linux to view the server name. Today, we have a small requirement: how to display the server's machine name on the webpage. in Ubuntu, you only need to enter the command uname-n to see it (Redhat is the same ), so I wondered if php could meet a small demand today, How to display the server machine name on a webpage, In Ubuntu, you only need to enter the command uname-n to s

Linux Shell Script Tutorial Series (v): mathematical operations

This article mainly introduces the Linux Shell Script series (v): Mathematical operations, this article explains the use of Let, (()) and [] arithmetic, using expr for arithmetic operations, using BC for arithmetic operations three ways, the need for friends can refer to the Arithmetic operations are essential in any programming language, and the shell is no exc

Linux Shell Script Tutorial Series (iii): Variables and environment variables

This article mainly introduces the Linux Shell Script series (iii): Variables and environment variables, this article explained the common variable, get the length of the string, environment variables and so on, the need for friends can refer to the First, topsy variables and environment variables Variables are an essential part of any programming language and are used to hold variables of various types.

Linux Advanced Shell Script tutorial

Tags: linux shell scriptShell Advanced StepConditional Select if statement to achieve conditional judgmentIf syntax: if Commands;then commands (if the command is true, the subsequent command will be executed, fi ends;)Elif Commands;then Commands (if the previous if is not true, then to determine whether the elif is true, the following command is true, you can write multiple elif, can be written without writ

Linux Shell Script Series Tutorial (vii): script debugging

This article mainly introduced the Linux Shell Script Series tutorial (Seven): script debugging, this article explained the bash built-in debugging function and the custom debugging function and so on content, needs the friend may refer to under First, debug scripts Debugging is one of the important features that every programming language should implement, and

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