Programmer Think

Introduction to supervisor First, let's introduce supervisor. Supervisor( http://supervisord.org )It is a client/server service developed in Python. It is a process management tool under Linux/Unix system. It does not support Windows system. It can easily monitor, start, stop and restart one or more processes. For a process managed by supervis ...

Domain name system Domain name system (DNS) is mainly used for the mapping between host name and IP address. The host name can be either a simple name, such as solaris or bsdi, or a fully qualified domain name (FQDN), such as solaris unpbook. com . resource record Entries in DNS are called resource records (RR s). A. A record maps a ho ...

5 Makefile project management Script file: put a series of commands in a file for batch execution Name: makefile Makefile One rule: Objectives: dependencies Command (1 table indent before the command) Two functions: #The wildcard function, together with wildcards, finds all the files in the folder . c Documents src=$(wildcard ./*.c) #P ...

preface One of the best things about Linux is its multi person and multi task environment. If you are exposed to Linux for the first time, what is the meaning of so many directories and files under Linux? Let me make a summary. 1, Manage user accounts Compared with windows operating system, the functions of user account and group account ...

The methods of interprocess communication described in the previous articles, such as pipeline, shared memory, message queue, etc., all depend on the shared resources of a computer system. These resources include file system space, shared physical memory, or message queues, but they can only be used on the same host. So how can we communicat ...

From Chapter 2 of the second edition of shell script actual combat to improve user commands Script 14 formatting long lines If you're lucky, the Unix system you use already contains the fmt command, which is very useful if you work with text every day. fmt can help you format your email or fill the available page width of your document wit ...

1. Introduction to select Under linux, we can use select for I/O reuse, monitor multiple file descriptors and judge whether there are qualified events. When using the select function, we can see whether there are readable, writable or error events. 2 function explanation 2.1 function prototype #include <sys/select.h> int select(i ...

[experiment] package com.infuq.tmp; public class Main { public static void main(String args[]) { for (;;) { try { Thread.sleep(5000); } catch (InterruptedException e) { e.printStackTrace(); } } } } In the above code, let the JVM not exit. Let's do so ...

Deploying rabbitMQ image cluster Version information rabbit MQ: 3.8.5 Erlang: Official recommended minimum 21.3 recommended 22.x Here's 23 Environmental preparation Host planning host node 172.16.14.3 Disk node 172.16.14.4 Memory node 172.16.14.5 Disk node Memory node: The memory no ...

VNC introduction VNC is a remote control tool software. VNC is a free open source software based on UNIX and Linux operating system. It has powerful remote control ability, high efficiency and practicality. iis7 server management tool is a free VNC connection software. It supports batch opening and installation of VNC servers. It can connect m ...