exit status

These tools may have been used, especially the system administrator or Linux Server maintenance students may know these gadgets, there will be a little more, in addition to the system monitoring gadgets, including some MySQL tools, and even in-depth

Shell scripting is one of the skills that Linux OPS engineers have to master, and the use of shell scripts allows us to better operate Linux systems and facilitate our execution.One, the basics of programmingBASIC Programming ConceptsProgramming

Help me install a 10 Gb Oracle on CentOS. As a result, my friend's CentOS version is 6.2, the latest version, but it is basically the same on Linux, so follow Help me install a 10 Gb Oracle on CentOS. As a result, my friend's CentOS version is 6.2,

1. system environment variables after the user logs on to the system: $ Home user's own directory $ Path: the directory to be searched during Command Execution $ TZ Time Zone $ Mailcheck the number of seconds to check whether a new letter exists

I.Introduction Problems Help me install a 10 Gb Oracle on CentOS. As a result, my friend's CentOS version is 6.2, the latest version, but it is basically the same on Linux, so follow the previous steps, quick operations result in N errors that have

What is Bash shell script programming?A: There are multiple shells in Linux, and the default shell for CentOS and Redhat is the bash shell. As for shell scripts, this is a bit like (. bat file) for batch files inside the Windows operating system. I

Linux--shell Script Foundation 3:shell function "parameter passing and input output" & built-in functionsfunction definition 1Exit Status 1Parameter Passing 2Standard IO 2Script Debugging 2And&or 3Built-in command Supplement 3function definition

This article transferred from: http://blog.csdn.net/flowingflying/article/details/5069646　 This article is also the fifth chapter of the Learning the Bash Shell 3rd Edition flow control reading notes, but we will not be limited to this. Flow

We often interact with the operating system or execute Shell commands in Ruby. Ruby provides us with many ways to accomplish this task. ExecKernel#execReplaces the current process by executing a given command, for example:$ irb>> exec ‘echo

Click Back to learn the path of the Linux command line and shell script12.1-Structured Command If-thenMany programs require some logical process control over the commands in shell scripts. A class of commands will cause the script to skip certain

Common shell programming tips-general Linux technology-Linux programming and kernel information. For more information, see the following. 1. system environment variables after the user logs on to the system: $ HOME user's own directory $ PATH:

This article to share the content is the PHP implementation of the system programming of the multi-process programming introduction and orphan process, zombie process, has a certain reference value, the need for friends can refer to Multi-process

1. system environment variables after the user logs on to the system:$ HOME user's own directory$ PATH: the directory to be searched during Command Execution$ TZ Time Zone$ MAILCHECK the number of seconds to check whether a new letter exists$ PS1

[From] http://blog.chinaunix.net/uid-168249-id-2860686.html Reference: 1. system environment variables after a user logs on to the system:$ Home user's own directory$ Path: the directory to be searched during Command Execution$ TZ Time Zone$

Shell programming structure, shell programming structure Directory: 1.1 shell functions 1.2 condition structure: if 1.3 condition structure: case 1.4 condition structure: select 1.5 loop structure: 1.6 loop structure: while 1.7 loop structure: 1.8

1. system environment variables after the user logs on to the system:$ Home user's own directory$ Path: the directory to be searched during Command Execution$ TZ Time Zone$ Mailcheck the number of seconds to check whether a new letter exists$ PS1

变量：命名的内存空间 数据存储方式： 字符： 数值：整型，浮点型 变量：变量类型 作用： 1、数据存储格式 2、参与的运算 3、表示的数据范围 类型： 字符 数值：整型、浮点型 强类型：变量不经过强制转换，它永远是这个数据类型，不允许隐式的类型转换。 一般定义变量时必须指定类型、参与运算必须符合类型要求； 调用未声明 变量会产生错误 如 java,c# 弱类型：语言的运行时会隐式做数据类型转换。无须指定类型， 默认均为字符型；参与运算会自动进行隐式类型转换； 变量无须事先定义可直接调用

You can encapsulate the shell script code in a function so that it can be used more than once anywhere in the script.17.1 Basic Scripting functionsFunction: is a block of script code that can be named and reused anywhere in the code.17.1.1 Creating

Strictly speaking, there is no concept of an expression in the shell. The shell itself is really just a collection of commands, and of course it is not a random heap, but a certain organization. But this organization is not so rigorous, so this

Original link: http://codingstandards.iteye.com/blog/836625 (reproduced please specify the source)Description of UseThe exit command exits the current shell and can terminate the current script execution in a shell script.Common parametersFormat: