comment line

Linux/Unixshell scripts clear Archive log files for DEV and UAT environments, sometimes the database needs to be in archive mode, but it does not need to be backed up. Therefore, the constant increase in archive archiving logs results in a large

LINUXShell special character representation # Note 1. comment # Comment 2. in the middle of the quotation mark and # representation # itself 3. echo $ {PATH # * :}# parameter replacement, not a comment 4. echo $(2 #101011) # number conversion, not a

Source: Skynet Currently, the popular way to listen to songs is to download them online, instead of searching for them at audio stores. The method used by the karaoke bar is generally to log on to the site that provides MP3 music download, or use a

Reprinted from: "Fun It" public numberObjectiveBatch file contains a series of DOS commands that are typically used to automate repetitive tasks. Users simply double-click a batch file to perform tasks without having to enter the same instruction

Sendmail is an excellent Mail System in Linux. Without any setup, the source address of the sendmail e-mail address is like a userid@localhost.localdo, which is identified as SPAM or rejected by almost all mailboxes. 1. Install Sendmail In CentOS,

Currently, the mail server wants to own its own mail server. Using senmail alone, postfix can no longer meet users' needs. More and more enterprises are using extmail to build enterprise-level mail servers. What are the requirements for the email

A) concepts of processes and threadsPopular Will, a process is one of our applications. For example, entering the Calc command on the cmd command line will open the calculator for Windows. In Task Manager, you can see that a process named Calc is

In this tutorial, the C language is introduced in depth, from basic knowledge to the latest functions of ANSI-C standards, the content covers from the basic concepts such as arrays, classes to polymorphism, templates and other advanced concepts.

How can I use Python to create a customized Eclipse IDE? Eclipse is a powerful framework that supports multiple extension methods through the built-in plug-in mechanism. However, if you want to add a few additional features, you will inevitably need

During the application of the Python programming language, if you want to use the Python programming language to call Matlab to plot and save data, you can refer to the following articles to learn more about it, the following is the main content of

 Seven, the Hands Eliminate Wild hands The "wild Pointer" is not a NULL pointer, it is a pointer to "junk" memory. It is generally not wrong to use a NULL pointer because It is easy to judge with an if statement. But a "wild pointer" is

1. OverviewGrunt is also a task runners based on JavaScript (using NPM) technology. Task runners is an application, or it is a task tool. This chapter continues with the previous article on the basis of the project to demonstrate!2. Compile Less2.1

DLL Development SummaryAn introductionDLL (Dynamic linkable Library), you can simply think of a DLL as a repository, which provides you with some variables, functions that you can use directly.Static and dynamic libraries are all ways to share code,

C language programming in Linux-Basic Knowledge-general Linux technology-Linux programming and kernel information. The following is a detailed description. Preface: This article introduces the basic knowledge required for C Programming in LINUX. In

?? Statements and syntax?? Variable assignment value?? Identifiers and keywords?? Basic style guide?? Memory management?? The first Python program 3.1 statements and syntax Python statements have some basic rules and special characters:?? The pound

Linux study Note 2-General Linux technology-Linux programming and kernel information. The following is a detailed description. Compiled basic programs to test the compilation, linking, and running of linux. G ++-o filename. cpp G ++-o filename.

1. The reputation of variablesWindow.name = ' Gjlin '; Global Variables Direct name = ' Gjlin ' also represents global variables, but it is recommended to use Window.name = ' Gjlin ' as a form of representationvar name = ' Gjlin '; Local variable

Annotations, variable declarations, Array Operations, and Ruby variables in the ruby tutorial I read an article "PHP basic tutorial" on "blog Park" two days ago and introduced PHP. D guago also wrote a "Ruby getting started tutorial" when learning

When writing code, you might add some description to your code to improve the readability of your code.Note content is not executed as code, so it requires a certain specification and format.One. Comment Line code:The format is: The content of the

Article Title: Install Samba and configuration notes for Linux source code. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and