not exit

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Python-implemented Excel file read-write class

This article describes the Excel file read-write class implemented by Python. Share to everyone for your reference. Specific as follows: #coding =utf-8####################################################### #filename: excelrw.py#author:defias#date

Do you really need to exit?-Let's talk about the exit function of the android program.

I have been engaged in Android development for some time. I believe that many Android programmers developed from Windows will habitually encounter the same problem as me: how to exit the program completely? My own experience is not authoritative and

Summary of executing shell commands in vim

Run the shell command in vim. the following forms are available ):! The command does not exit vim, and runs the shell command to display the command output in the vim command area. it does not change the content of the currently edited file, for

Service Control practice of Golang

This is a creation in Article, where the information may have evolved or changed. The control of programs and services is essentially the right start-up and can be controlled to stop or exit. In the go language, is actually the program security

Notes for several questions in Java

1. in Java, evaluate the length of the array char ch [] (number of elements): ch. length; Evaluate the length of string s: s. length (); 2. The arraycopy function is used to copy an array and is defined as follows: Static void arraycopy (Object src,

Dry share: The beginning and creation of a detailed thread

Read Catalogue Code download First, the creation and start of a thread Second, pass the data to a thread Third, named thread Iv. foreground thread and background thread Five, Thread priority Vi. Exception Handling

Linux system call Fork () Summary (ii)

One, the process replicates (or produces)The child processes obtained by using the fork function inherit the entire process's address space from the parent process, including: process context, process stack, memory information, open file descriptor,

XShell5 connecting an Ubuntu virtual machine

When you connect in this way, you always connect to a virtual machine, and you are always prompted could not connect to On the internet to find a half-day data only found because my virtual machine does not have the SSH service caused by To solve

Implementation of a one-to-many relationship in flask SQLAlchemy

SQLAlchemy is an excellent ORM framework in Python that defines the correspondence of various database tables in the SQLAlchemy.One-to-many is a more common relationship. Using flask SQLAlchemy to achieve a one-to-many relationship is as follows:1.

Service Control practice of Golang

This is a creation in Article, where the information may have evolved or changed. The control of programs and services is essentially the right start-up and can be controlled to stop or exit. In the go language, is actually the program security

Service Control practice of Golang

This is a creation in Article, where the information may have evolved or changed. The control of programs and services is essentially the right start-up and can be controlled to stop or exit. In the go language, is actually the program security

Excel file read/write class implemented by Python

This article mainly introduces the Excel file reading and writing class implemented by Python, which involves some common operations such as reading, writing, and printing in Excel, and has some reference value, for more information about how to

Parent and child threads in Java

In the past when learning the operating system, the memory of the parent thread has died, the child thread has disappeared. However, today in the search for information, found a little doubt, in this record. Java-written programs are run in a Java

The 12th week summary of the Design foundation of information security system

EXEC1#include #include int main (){CHAR*ARGLIST[3];ARGLIST[0] = "ls";ARGLIST[1] = "-L";ARGLIST[2] = 0;//nullprintf ("* * * ~ to exec ls-l\n");EXECVP ("ls", arglist);printf ("* * * * ls is done. Bye ");return 0;}The EXEC system call clears the

IPaddress, ipendpoint, iphostentry Introduction

IPaddress, ipendpoint, and iphostentry are located in the namespace system. NET and provide IP address operations. IPaddress is an IP address class encapsulated by. net.   Common Methods: 1. IPaddress. parse () Public static IPaddress

Nohup command Analysis

Nohup command AnalysisTo put a command in the background for execution, we generally use nohup sh command && I know that this command is executed in the background. What does nohup do?This starts from the unix signal. The unix signal mechanism can

PHP script memory leak causes Apache frequent downtime solution _linux

In the deployment of a set of intranet test environment, frequent downtime, after the boot constantly eat memory, restart Apache memory consumption will continue to rise until swap run out, until the crash, due to the intranet environment, server

Brief introduction of Linux command first use

1The CD command CD command is often used to change the directory [email protected]:~# cd/home/user/Desktop [email protected]:~# CD: Back to previous level [email protected]:~# CD. /.. Return to level Two directory if you do not know the working

Vim shortcut keys

The shortcut keys I use Command mode : Wq or ZZ Save file and exit : Q Do not save file exit : Set Nu Sets line number :/Down Find :? Look up :%s/old/new/g replaces all old characters in text : N1,n2 s/s1/s2/g The S1 character from the N1 to the N2

Linux process Practice (2)--zombie process and file sharing

orphan process with zombie processOrphan process:If the parent process exits first and the child process does not exit then the parent process of the child process becomes the init process. (Note: Any process must have a parent process)Generate

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