Programming VIP

Getting time in Java/JS is very simple (system. Currenttimemillis()) nanoTime(); new Date(). Gettime (), etc.), which is a little more complicated in C/C + +. Today, let's learn about time related concepts and acquisition methods in Linux C programming. Linux time related knowledge The UNIX system uses the elapsed time since 0:00 on Jan ...

Supervisor( http://supervisord.org/ )It is a client/server service developed in Python. It is a process management tool under Linux/Unix system and does not support Windows system. It can easily monitor, start, stop and restart one or more processes. For a process managed by supervisor, when a process is accidentally killed, supervisor will aut ...

Stress is a stress testing gadget under linux. I see some people use this tool to describe some scenarios of resource depletion, and others use it for chaos testing. Users should note that this tool does not simulate business problems, but system level problems. Therefore, when using it to simulate, it is very different from the real busin ...

Virtual machine installation, Linux system and software installation Environmental Science: Software selection: server with GUI Network type: use network address translation (NAT) Power on automatic networking cd /etc/sysconfig/network-scripts/ vim Network profile //ONBOOT = "no" is changed to yes, and there is no need to conne ...

The second part (Networking) describes the protocols used on UNIX system and the technology used to set up, expand and maintain network and Internet Oriented server. In addition, it also introduces the upper network software, including domain name system, e-mail, single sign on and Web hosting. Chapter 13 TCP/IP networking 1. Basic knowle ...

docker network creation Containers themselves cannot be networked with each other, but they can be interconnected by placing them in the same network segment. Can pass docker network create creates a network segment name To create network segments, we can also use docker network ls to view network segments. By default, there will be thr ...

1, Introduction to Redis Redis is an open-source SQL database developed based on C language for the underlying code. Redis runs and persists based on memory and adopts the storage form of key value (key value pair). It is an indispensable part of the current distributed architecture Advantages of Redis It has extremely high data reading ...

Chapter 23 configuration management Ansible and Saltstack 1. Configuration management system The most commonly used CM systems: Ansible, Salt, Puppet, Chef Interpretation of configuration management terms Terms we useAnsibleSaltoperationtaskstateop typemodule (template)functionOperation list (OP)Tasks (multiple tasks)states (state set)b ...

See what types of shell interpreters are available on this machine: [root@sanchuang huahsan]# cat /etc/shells /bin/sh /bin/bash /usr/bin/sh /usr/bin/bash /usr/bin/tmux /bin/tmux sh It's a very old interpreter, more than bash Have a sense of history, No bash Easy to use [root@sc ~]# sh switch to sh interpreter sh-4.4# Switch bash to bash inte ...

Introduction: This paper mainly introduces how to realize the automatic running script of ubuntu 18.04 system startup through systemd. For image download, domain name resolution and time synchronization, please click Alibaba open source mirror station 1, Overview Ubuntu 18.04 does not have / etc / rc.exe by default Local file. It is impos ...