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vCenter Server 8 Standard

Key	Tested
4F282-0MLD2-M8869-T89G0-CF240	✅
0F41K-0MJ4H-M88U1-0C3N0-0A214	✅

ESXi 8

Key	Tested
4V492-44210-48830-931GK-2PRJ4	✅

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package com.base.framework.utils;

import com.google.common.base.Joiner;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringEscapeUtils;
import org.apache.commons.lang.StringUtils;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;

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# 获取所有进程的所有信息
wmic /output:d:\\tmp\\proc.csv process

# 获取指定进程的命令行参数和内存大小
wmic /output:d:\\tmp\\proc.csv process where name=\"java.exe\" get commandline,workingsetsize
 
 
# Note
# 如果output指定的文件被其他程序打开，会报错：Invalid file name.

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package com.base.framework.utils;

import com.base.framework.exception.AppException;
import org.springframework.data.redis.core.RedisTemplate;

import java.util.concurrent.TimeUnit;

/**
 * 频率限制器
 * 令牌桶算法

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package com.example.test;

import org.asynchttpclient.*;

import java.net.ConnectException;
import java.util.concurrent.TimeoutException;

import static org.asynchttpclient.Dsl.asyncHttpClient;
import static org.asynchttpclient.Dsl.proxyServer;

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 哪个dependency引入了某个jar包？
 
 mvn dependency:tree -Dverbose -Dincludes=org.apache.httpcomponents:httpclient::
 
 https://stackoverflow.com/a/4600861/2199283
 
 
 maven assembly pulls wrong dependency？
https://stackoverflow.com/questions/13849854/maven-assembly-pulls-wrong-dependency

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// =========== observable ================
var observable = Rx.Observable.create(function subscribe(observer) {
  // Keep track of the interval resource
  var intervalID = setInterval(() => {
    observer.next('hi');
  }, 1000);

  // Provide a way of canceling and disposing the interval resource
  return function unsubscribe() {
    clearInterval(intervalID);

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wget https://dl.eff.org/certbot-auto
chmod a+x ./certbot-auto
./certbot-auto

# cron job
0 0 1 * * /opt/certbot-auto renew >> /var/log/certbot-renew.log


# Reference
# https://certbot.eff.org/docs/install.html#certbot-auto

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To get your configuration working, make these configuration changes on the client:

/etc/ssh/ssh_config

Host *
  ServerAliveInterval 100  

ServerAliveInterval The client will send a null packet to the server every 100 seconds to keep the connection alive

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Type the following key sequence: Enter, ~, .. On US keyboards, the tilde (~) is Shift+`.

SSH Escape Characters

https://linux.die.net/man/1/ssh