jhsea3do

INSTDIR=$HOME

export MYSQL_HOME=$INSTDIR/mariadb/usr
export MYSQL_DATA=$INSTDIR/mariadb/data
export MYSQL_LOGS=$INSTDIR/mariadb/logs
export MYSQL_CONF=$INSTDIR/mariadb/conf
export MYSQL_PKGS=$INSTDIR/pkgs

export LD_LIBRARY_PATH=$INSTDIR/mariadb/lib/x86_64-linux-gnu:\
$INSTDIR/mariadb/usr/lib/x86_64-linux-gnu

jhsea3do

#!/bin/sh

# SKIP first boot
MACHINE_ID="${MACHINE_ID:-9c06af6ff2f24f21ba291f8dc6dde14a}"
[ -f "/etc/machine-id.orig" ] && \
MACHINE_ID=$(cat /etc/machine-id.orig) && \
rm -rf /etc/machine-id.orig

[ "$(cat /etc/machine-id)" != "$MACHINE_ID" ] && \
exit 0

jhsea3do

Security

Permission and Privilege

https://security.stackexchange.com/questions/41309/difference-between-privilege-and-permission

权限是对象（例如文件）的属性，特权是代理（例如用户）的属性。

User A can read write file X. [ the privilege is having the permission to write the file 'x' ]

jhsea3do

package study.future;

import java.util.concurrent.Callable;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

jhsea3do

目前采用 v2ray 的 ws + tls + cdn 方式 是可行的。

但是我觉得手机端软件是否不够安全，配置文件可能被扫描，我有一个vps主机前些天刚刚修改了ip用了ss，当时联通是可以访问的，而且我仅仅是访问了一次这个新建的ss，第二天就发现连不上了(ssh 22打不开)。我是未root的ios, 安装了liguangming 的小火箭。

由此我很担心在手机端配置 ws + tls 方式会把域名泄露给墙，如果不采用CDN那么必须是国内的主机ip，如果采用CDN那么cf这么好的资源可能会因为大家滥用被彻底ban掉。

jhsea3do

DROP TABLE IF EXISTS `xtree`;

CREATE TABLE IF NOT EXISTS `xtree` (
gid BIGINT,
line BIGINT, 
id VARCHAR(3),
comments VARCHAR(10),
level BIGINT );

insert into `xtree` values ( 1, 1,  'A',   'A', 1);

jhsea3do

#!/bin/sh
sudo yum install -y curl wget unzip net-tools psmisc;
sudo yum install -y http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql57-community-release-el7-10.noarch.rpm;
sudo yum install -y mysql-community-client mysql-community-devel
sudo yum groupinstall -y "Development Tools"
# https://mirror.tuna.tsinghua.edu.cn/help/epel/
# hosts
# 151.101.9.63    files.pythonhosted.org
# 151.101.192.223 pypi.org
sudo yum install -y epel-release

jhsea3do

const { PublicClient, V3WebsocketClient } = require("@okfe/okex-node");
const level = require('level');
const _ = require('lodash');
const PouchDB = require('pouchdb').plugin(require('pouchdb-upsert'));
const uuidv4 = require('uuid/v4');
const uuidv5 = require('uuid/v5');

const debug = (...args)=>(console.log(...args))
const excns = 'okex';
const wssns = {

jhsea3do

let threads = new Set;
let x = 0;
let d = console.log
let s = ()=>{
  for(let t of threads) {
    clearTimeout(t);
  }
}
let c = (...args)=>{
  console.log('quit', ...args);

jhsea3do

echo ${1:-"AccessKeyId:SecretAccessKey"} | tee /root/.passwd-s3fs
sudo sh s3init.sh "mybucket" "https://s3.wasabisys.com"