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#!/bin/bash

# 检查系统版本
if [ -f /etc/redhat-release ]; then
    OS_VERSION=$(grep -oE '[0-9]+\.[0-9]+' /etc/redhat-release)
else
    echo "未找到 /etc/redhat-release 文件。请确保您运行的是 CentOS 系统。"
    exit 1
fi

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#!/usr/bin/env bash
echo=echo
for cmd in echo /bin/echo; do
    $cmd >/dev/null 2>&1 || continue

    if ! $cmd -e "" | grep -qE '^-e'; then
        echo=$cmd
        break
    fi
done

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Vagrant and VMWare Tech Preview on Apple M1 Pro

This document summarizes notes taken while to make the VMWare Tech preview work on Apple M1 Pro, it originated from discussions in hashicorp/vagrant-vmware-desktop#22

Installing Rosetta

First install Rosetta if not already done, this is needed to run x86 code:

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-- Author: Michael Bianco <http://mabblog.com/>
-- Some help from: http://discussions.info.apple.com/message.jspa?messageID=10363317

on create_vpn_service(vpn_name)
	tell application "System Preferences"
		reveal pane "Network"
		activate
		
		tell application "System Events"
			tell process "System Preferences"

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<?php

// refer: http://hustnaive.github.io/php/2015/08/21/php-detect-encoding.html

/**
     * 检测字符串编码（注意：存在误判的可能性，降低误判的几率的唯一方式是给出尽可能多的样本$line）
     * 检测原理：对给定的字符串的每一个字节进行判断，如果误差与gb18030在指定误差内，则判定为gb18030；与utf-8在指定误差范围内，则判定为utf-8；否则判定为utf-16
     * @param string $line
     * @return string 中文字符集，返回gb18030（兼容gbk,gb2312,ascii）；西文字符集，返回utf-8（兼容ascii）；其他，返回utf-16（双字节unicode）
     * @author fangl

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# .bashrc

# User specific aliases and functions

alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias ll='ls -al'

# Source global definitions

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# bash

https://stackoverflow.com/questions/33632668/bash-tab-completion-of-filenames-after-arguments

complete -D -o default

# zsh

https://unix.stackexchange.com/questions/333530/zsh-path-file-name-completion-on-file-arguments/333543#333543?newreg=65c5031ab2d6429984db9f2c4a26ac3c

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Install tcpkill
yum -y install dsniff --enablerepo=epel

View connections
netstat -tnpa | grep ESTABLISHED.*sshd.

Block with ip tables
iptables -A INPUT -s IP-ADDRESS -j DROP

Kill connection

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// https://juejin.im/post/5b3629cbf265da59645b1ac5

package main

import (
	"context"
	"encoding/json"
	"flag"
	"fmt"
	"net"

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#!/bin/bash
# ssh-multi
# D.Kovalov
# Based on http://linuxpixies.blogspot.jp/2011/06/tmux-copy-mode-and-how-to-control.html

# a script to ssh multiple servers over multiple tmux panes


starttmux() {
    if [ -z "$HOSTS" ]; then