plentz

# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

ashrithr

Installing Kerberos on Redhat 7

This installation is going to require 2 servers one acts as kerberos KDC server and the other machine is going to be client. Lets assume the FQDN's are (here cw.com is the domain name, make a note of the domain name here):

• Kerberos KDC Server: kdc.cw.com
• Kerberos Client: kclient.cw.com

Important: Make sure that both systems have their hostnames properly set and both systems have the hostnames and IP addresses of both systems in

jctosta

Screen Quick Reference

Basic

Description	Command
Start a new session with session name	screen -S <session_name>
List running sessions / screens	screen -ls
Attach to a running session	screen -x
Attach to a running session with name	screen -r

feelinc

#!/usr/bin/python

import os
import sys
import boto3

# get an access token, local (from) directory, and S3 (to) directory
# from the command-line
local_directory, bucket, destination = sys.argv[1:4]

zedar

Add LZO compresssion codecs to the Apache Hadoop and Spark

LZO is a splittable compression format for files stored in Hadoop’s HDFS. It has valuable combination of speed and compression size. Thanks to hadoop-lzo the .lzo files could be splittable too.

• Install lzo and lzop codes [OSX].

$ brew install lzo lzop

• Find where the headers and libraries are installed

devhero

Byobu is a suite of enhancements to tmux, as a command line
tool providing live system status, dynamic window management,
and some convenient keybindings:

  F1                             * Used by X11 *
    Shift-F1                     Display this help
  F2                             Create a new window
    Shift-F2                     Create a horizontal split
    Ctrl-F2                      Create a vertical split
    Ctrl-Shift-F2                Create a new session

drAlberT

UFW cheat sheet

Usage

ufw [--dry-run] enable|disable|reload
ufw [--dry-run] default allow|deny|reject [incoming|outgoing]
ufw [--dry-run] logging on|off|LEVEL
    toggle logging. Logged packets use the LOG_KERN syslog facility. Systems configured for rsyslog

subfuzion

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

mtsuszycki

#!/bin/bash 

function emsg() { email_body="$email_body\n${1}"; }


function email()
{
        local subject=$1 rcpt=$2
        echo -e "$email_body\n\n\n" | mail -s "$subject" -r noreply@somedomain.com "$rcpt"
}

mrbar42

running:

bash create-vod-hls.sh beach.mkv

will produce:

    beach/
      |- playlist.m3u8
 |- 360p.m3u8