Linux (7) _ shell script programming, __shell Script Programming
I. What is a shell script?
In addition to a command interpreter, shell is also a programming language. A program written in shell is similar to a batch processing program in DOS.
It is an interface between the user and the operating system.
The shell script
A scripting encoder is a simple command-line tool that enables script designers to encode the final script so that Web hosts and Web clients cannot view or modify their source code. Note that this code only prevents others from accidentally looking at your code, and does not prevent a deliberate hacker from viewing your encoded content and its methods.
Web Designer in the Web page and server Active Sever pa
This article explains the javascript Functions on the floating layer and the principles and precautions of the functions.
I. SummaryThis series of articles aims to abstract common, cross-Browser Scripting methods.
This article explains the javascript Functions on the floating layer and the principles and precautions of the functions.
II. Implementation results
Using the script to pop up the floating layer is one of our most common
When I first performed script encoding six months ago, I had no experience in using it. So I asked 51js if there was any problem with mixing the encode script and the normal script? The results did not receive any constructive comments, which at least explained two problems: No one cares, and no problem. Of course, I prefer to accept the latter result and start t
The browser to the JS file operation has two main parts: Download and execution;JS file download In some browsers is parallel, in some browsers are serial, such as: IE8, Firefox3, chrome2 are serial download;Execution in all browsers is blocked by default, when JS in the execution of HTML parsing and other operations, so, the top of the page JS should not be too large, the conference caused the page long time in a blank state, for the outside chain of JS files, async and defer attributes can red
This article from the csdn blog, reproduced please indicate the source: http://blog.csdn.net/jinghaianlange/archive/2007/07/16/1693653.aspx
◎ Vbs Script Programming Tutorial II-how to start the first vbs script?
Like most computer tutorials !"ProgramStart our exercises. What? What does it mean? That is to say, the beginning of most computer programming tutorials is to write a small program. The resul
Regular Expression Matching content in lt; script gt; lt;/script gt. The content contains the content in lt; script gt; lt;/script gt; that matches the regular expression of any character. The content includes blank spaces and any Characters nbsp; preg_match regular matches the content in
PHP Merge Discuz user script method, php merge Discuz script
The examples in this article describe how PHP merges discuz user scripts. Share to everyone for your reference. Specific as follows:
A few days ago encountered a need to merge two discuz projects, a user level of about 120,000, one is 10,008. Needless to say, it must have dropped 10,008, leaving 120,000. Start to feel bad processing, the data tab
1. Create a backend, use ajax to transmit data to the php interface, and then perform operations on the database. Assume that the newly added data is amp; lt; script amp; gt; alert ( quot; dfsaf quot;); amp; lt; script amp; gt; how should we block it? 2. Try to escape each string when obtaining data at the front end... 1. Create a backend, use ajax to upload data to the php interface, and then perform
This article describes how to get the directory where the script file (. ps1 file) is located in the PowerShell script. This article describes the method applied to PowerShell 3.0.
In PowerShell 3.0, there is a variable that makes it easy to get the directory where the script resides. We are in E:\ps\script1.ps1 and SCRIPT2.PS1, the contents are as follows:
SCR
First, debug scripts
Debugging is one of the important features that every programming language should implement, and when something unexpected happens, use it to generate the running information of the script, and the debugging information can help you figure out what caused the program to crash or behave abnormally.Second, bash built-in debugging function
With the built-in debugging capabilities of bash, you can debug the entire
Slackware version: Slackware 7.0 and above
Slackware uses BSD-style init scripts, while many other distributions use System V-style init scripts. SysV and BSD scripts are all readable, that is, they are shell scripts, not compiled programs. The main difference is how the script is designed.
SysV scripts tend to accept parameters such as Start, stop, and restart, depending on the program it starts. So you can start bind with a command like/etc/init.d
What is a shell?The shell is a scripting language aming_linux blog.lishiming.netYou can use logical judgments, loops, and other syntaxFunctions can be custom-definedThe shell is a collection of system commandsShell scripts enable automated operations, which can greatly increase our operational efficiencyShell script structure and execution methodsNeed to add #!/bin/bash at the beginningLines that begin with # are interpreted as explanatory notesThe na
# And for common users, it is $
PS2: A subsidiary prompt. The default value is "> ". You can modify the environment variable to modify the current command string.
Location variable:
$1, $2,... $ n
Special variables:
$? : Return Value of the execution status of the previous command. If the echo $0 result is 0, it indicates success, and if it is not 0, it indicates failure.
$0: get the name of the currently executed shell script file, usually used i
Agent often encounters various problems during upload. Common methods are to clean up logs or secure. A script has been compiled. This script applies to the environment of standalone and RAC.
Agent often encounters various problems during upload. Common methods are to clean up logs or secure. A script has been compiled. This
Recommended 10 websites with free php script download, 10 free PHP script
This article will focus on the free resource download stations for 10 PHP scripts. Previously recommended "16 Hot sites to download cool scripts", these sites in addition to PHP scripts, as well as JavaScript, Java, Perl, ASP and other scripts. If you're already a scripting-code craftsman, you might want to put your great
This time, the simplest form of the script will be implemented. The script has only commands, labels, and jumps, and it looks like a compilation, but it's good to read. Although the syntax of this scripting language is very simple, the most basic elements are still available.
As a scripting engine, the script itself is best not to involve specific areas in order
Shell Script Introduction
Shell is a scripting language Aming_linux (public number) blog.lishiming.net (blog)
You can use logical judgments, loops, and other syntax
Functions can be custom-defined
The shell is a collection of system commands
Shell scripts can be automated operations, which can greatly increase our operational efficiency shell script structure and execution
A #!/bin/bash is req
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