vietdien2005

Commands Check Performance Disk

Commands

• Reading speed cache/buffer: hdparm
• Check cache reading speed: hdparm
• Sequential write speed: dd
• Check iops when random read/write (block 4K): fio

Usage hdparm

vietdien2005

• Command

grep -o "[0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+" /var/log/nginx/access.log

• Unique IPs

grep -o "[0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+" /var/log/nginx/access.log | sort | uniq

vietdien2005

• Install Dev Tools, PHP, Nginx

  sudo yum install nginx php php-fpm php-common gcc glibc glibc-common gd gd-devel make net-snmp unzip -y
  sudo yum groupinstall 'Development Tools' -y

• Nginx – Nagios Configuration

  cd /etc/nginx/conf.d
  sudo vi nagios.conf

vietdien2005

  sudo apt-get install git libcurl4-openssl-dev build-essential libjansson-dev autotools-dev automake
  git clone https://github.com/hyc/cpuminer-multi
  cd cpuminer-multi
  ./autogen.sh
  CFLAGS="-march=native" ./configure
  sudo make
  sudo make install 
  sudo ./minerd -a cryptonight -o stratum+tcp://pool.minexmr.com:4444 -u <WALLET_ADDRESS_HERE> -p x -t 3

vietdien2005

Install

  sudo apt-get install bfgminer

• Unfortunately the version was not up to date, and was not compiled for mining scrypt-based coins like Litecoin. Here is how I built BFGMiner with this support.

• Install the dependencies:

  sudo apt-get install build-essential autoconf libtool libjansson-dev libcurl4-gnutls-dev libncurses5-dev libudev-dev libusb-1.0-0-dev yasm uthash-dev

vietdien2005

sudo cp ~/.config/monitors.xml /var/lib/gdm3/.config/

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VBR="2500k"                                    
FPS="30"                                       
QUAL="veryfast"                                  
YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2"  

SOURCE="http://125.212.211.162:8080/live/super-sunday.m3u8"
SOURCEFB="https://video-hkg3-1.xx.fbcdn.net/hvideo-atn2/v/dash-md/267360413666075-854021.m4a"              
KEY="agyz-6wy0-k429-8gqu"

#ffmpeg \

vietdien2005

Theming Slack for OSX

So, you love Slack, but you hate applications with large white backgrounds? Why not use Dark Mode! 🕶️

Unfortunately, Slack does not have a Dark Mode, although it's on their list of possibilities.

But, don't fret - there is a solution! Because the slack native desktop apps are just wrappers around a web app, we can inject our own CSS to customize the application to our liking.

(I take no credit for this exploit, graciously found via @DrewML https://gist.github.com/DrewML/0acd2e389492e7d9d6be63386d75dd99 and suggestions by @bradens, @jouni, @gkostov and others).

vietdien2005

function encryptor($action, $string) {
    $output = false;

    $encrypt_method = "AES-256-CBC";
    //pls set your unique hashing key
    $secret_key = 'dj7oiop1mkdp251EnCrIt4QKq4988w6a';
    $secret_iv = 'oeuGJW0cBI4ye998Z7435sj9EkGnDD34';

 // hash

vietdien2005

• Create your public key and private key

// Config RSA
$config = [
    "digest_alg"       => "sha512",
    "private_key_bits" => 2048,
    "private_key_type" => OPENSSL_KEYTYPE_RSA,
];

// Create the private and public key