shell function

In the shell, arguments can be passed to a function when it is called. Inside the function body, the value of the parameter is obtained in the form of a $n, for example, $ $ for the first argument, and $ = for the second argument ...Examples of

1. Define the function and reference inside the shell file:Copy CodeThe code is as follows:[~/shell/function]# Cat factorial.sh#!/bin/bashfunction factorial{Factorial=1For ((I=1;i Dofactorial=$[$factorial * $i]DoneThe factorial of Echo $ is:

Xi. functionsThe shell function is defined by the description of the shell grammar above and holds a series of commands waiting to be executed later. When the shell function name is used as a simple command name, a series of commands associated with

In a shell, you can pass arguments to a function when it is called. Inside the function body, the value of the parameter is obtained in the form of $n, for example, the first argument is represented, and the second argument is $ $ ... Examples of

The request execution time period is usually referred to as "appy times". Refers to the time period when the system VM stabilizes to the VxDs and ring-3 level application software (especially the 16-bit application). For example, at a specific time

Purpose and Requirements:When porting, you need to integrate the new content in the root filesystem rootfs1 into the ROOTFS2, but not the things rootfs2. That is, you can only compare the similarities and differences of two file systems, moving more

/* Configure /*----------------------------------------------------------------------------------------------- @ Blackeye poet Optional -----------------------------------------------------------------------------------------------*/ Role of

Command editing ability (history):One of the great features of Bash is that "he can remember the commands he used!" "This is a really great feature!" Because I just press "up and down" in the command column to find the front/rear input command! In

1. FunctionsShell functions, which are used to customize a segment of a program. To simplify the code. Grammar:Funtion fname () { //do something}The shell is top-down, executed from the left and right. So the definition of the function needs to

Fundamentals of the ten-year OPS series-LinuxZeng LinContact: [Email protected]Website: www.jplatformx.comCopyright: Please do not reprint the article without permission First, Introduction as programs become larger and more complex, design,

5.2 Bash Variables The following variables are set or used in Bash. Other shells generally do not process these variables. Some variables used by Bash are also described in other chapters: for example, for variables used by tools for controlling

Guide When you're going to really manipulate your Linux system, there's nothing like a command-line interface that lets you do that. To be a Linux master, you must be able to understand the different types of shell commands and use them

Guide When you're going to really manipulate your Linux system, there's nothing like a command-line interface that lets you do that. To be a Linux master, you must be able to understand the different types of shell commands and use them

Shell Getting Started Tutorial: Shell variables Variable A variable is a place to store data temporarily, and is a memory space. Bash shell and other programming languages, there is no "data form", which means that the default is not to

Program You no longer need to use the WIN32 application programming interface or VB Shell function to start the external application. Because you can use. NET Framework to further simplify the code by doing this operation with the System.Diagnostics.

From kwang.cn Not long ago, a MySQL Func vulnerability was published on the Internet. It is about using MySQL to create a user-defined function and then using this function to attack the server. We first saw the related reports on the o-otik, but

Note: Only part of the original text is excerpted. Original article address: Http://club.excelhome.net/forum.php? Mod = viewthread & tid = 449527.     I don't do the technology, but I often use EXCEL to process data. Today I find something

The definition of the shell function is almost the same as the normal C language function.function () {｝The return value of the Shell function can be displayed, and if there is no return then the execution result of the last statement will be

Syntax format for if structureSingle branch structureIf then Directives fiif ; Then command fiDual-branch structureIf ; Then instruction 1else instruction 2fiMulti-branch structureIf ; Then instruction 1elif instruction 2elif instruction

POSIX shell tips This article is used to record some of the useful tips I have found. This is a paper about POSIX (and other noncompliant shell script techniques. I have always insisted that the Bourne system is not a good programming language,