mrizvic

### DHCP PACKETS FROM/TO CLIENT WITH MAC ADDRESS 7c:2f:80:22:58:fe
tcpdump -vve -l -nn -s0 -v -i eth1 'udp[36:4] == 0x7c2f8022 && udp[40:2] == 0x58fe'

### LCP OVER PPPOE PACKETS
### https://www.wireshark.org/lists/wireshark-users/200712/msg00182.html
tcpdump -ei enp1s0 pppoes and ppp proto 0xc021

### CDP PACKETS
### https://medium.com/@hybby/tcpdump-and-cdp-packets-a626364d5a2f
tcpdump -nn -v -i eth0 -s 1500 -c 1 'ether[20:2] == 0x2000'

mrizvic

#!/usr/bin/env bash

help_string="cat or diff file if content has changed from last run"

FILE=$1
ME=$(basename $0)

if [ -z "$FILE" ]; then
    echo "USAGE: $ME <resultfile.txt>"
    echo "EXAMPLE: ifdiff.sh /tmp/changing-file.txt         - cat file when it was changed from previous run"

mrizvic

#!/usr/bin/env python

import time
import signal
import sys
import datetime
import inspect


def signalhandler (signum, frame):

mrizvic

Keybase proof

I hereby claim:

• I am mrizvic on github.
• I am mrizvic (https://keybase.io/mrizvic) on keybase.
• I have a public key ASDjoPvQ5ox-txhPJRPfq9xhEaK1DrZc6_LQs15tt1cx9go

To claim this, I am signing this object:

mrizvic

#!/bin/bash

### RUNNING:
#certbot certonly -d host.domain.tld --agree-tos --manual --preferred-challenges=dns --manual-auth-hook /root/certbot-hook-dns-auth.sh --manual-public-ip-logging-ok

HOST="_acme-challenge"
DYNZONE="SET_YOURDOMAIN_NAME"

if [ -z "$CERTBOT_DOMAIN" ] || [ -z "$CERTBOT_VALIDATION" ] || [ -z "$DYNZONE" ]
  then

mrizvic

redPin = 2
greenPin = 1
bluePin = 4

pwm.setup(redPin,500,0)
pwm.setup(greenPin,500,0)
pwm.setup(bluePin,500,0)

pwm.start(redPin) 
pwm.start(greenPin) 

mrizvic

-- nodeMCU specific
ws2812.init()
-- 4 LEDS, 3 bytes per LED
buffer = ws2812.newBuffer(4, 3)
green,red,blue = 255,64,192
buffer:fill(green,red,blue)

function brightness (x, max)
  return math.floor((math.floor((x * max) / 100)*2) + 1)/2
end

mrizvic

/*

 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * github.com/mrizvic wrote this file.  As long as you retain this notice you
 * can do whatever you want with this stuff. If we meet some day, and you think
 * this stuff is worth it, you can buy me a beer in return.   M.Rizvic
 * ----------------------------------------------------------------------------

## This function will pass incoming message to multiple outputs based on following conditions:

mrizvic

#!/usr/bin/env bash

ME=$(basename $0)
WORKFILE="/tmp/$ME.$$"

if [ ! -z "$MAILTO" ]; then
    RCPT=$MAILTO
else
    RCPT=$1
fi

mrizvic

#!/usr/bin/env bash

WORKFILE=/tmp/myreport.out

cat <<EOF > $WORKFILE
From: username <[email protected]>
To: [email protected]
Subject: your html report
Content-Type: text/html; charset="us-ascii"