Omar Yassin omar-yassin

omar-yassin / gist:9937810

Created April 2, 2014 16:37

Validating Email SPF/DKIM for GAPPS


	validate score of email via:
	http://www.mail-tester.com/
	email [email protected] (will send email report)

	validate SPF synatx with:
	http://www.kitterman.com/spf/validate.html?

	gapps validator:
	https://toolbox.googleapps.com/apps/checkmx/

omar-yassin / dns_spf_expander.sh

Last active October 28, 2019 19:35

DNS SPF Expander (MAX LOOKUP should not exceed 10 lookups)

	#!/bin/bash

	#TO RUN
	# > ./dns_spf_expander.sh domain.com

	lookup_count=0
	function spf_expand {
	for spf in $1 ; do
	if echo $spf \| grep "include:" > /dev/null 2>&1 ; then
	((lookup_count++))

omar-yassin / gist:9961949

Created April 3, 2014 20:11

GIT clone from local file repo

git clone --no-hardlinks path/to/file.git

omar-yassin / gist:ad51d512fd7346c1f8a5

Created June 5, 2014 15:06

Read JSON easily

cat json.file | python -m json.tool | less

omar-yassin / gist:2ad972882e92874fa061

Created June 7, 2014 02:33

BASH PS1

export PS1='\e[1;35m\u\e[m@\h:\e[1;31m\w\e[m\n\$ '

omar-yassin / gist:666bdf8ef137b1a64d36

Created July 8, 2014 20:25

Namecheap: Dynamic DNS

	python:
	# -- coding: utf-8 --
	import urllib2

	urllib2.urlopen("https://dynamicdns.park-your-domain.com/update?host=%s&domain=%s&password=%s" % ("SUBDOMAIN", "DOMAIN", "namecheap.dynamicDNS.PASSWORD"))

omar-yassin / gist:2e480f12057eb8cdd52f

Created October 3, 2014 14:30

BASH: error catching pipes

	tar ... \| ssh ...

	pipe_exit_status="${PIPESTATUS[@]}"
	tar_status=`echo $pipe_exit_status \| awk '{print $1}'`
	ssh_status=`echo $pipe_exit_status \| awk '{print $2}'`

omar-yassin / gist:97b281bb13ce74747f43

Last active August 29, 2015 14:08

awk-ing CSV with quotes with delimiter

	gawk -vFPAT='[^,]\|"[^"]"' '{print $1,$2,$3}'

omar-yassin / gist:f25b5a17f0f7084eecfd

Created April 30, 2015 14:11

AWS EC2 Powershell Cheatlist

	$EC2_launch_time = Get-Date (Get-EC2Instance -Instance $instanceId \| % { $_.RunningInstance } \| Select-Object -expand LaunchTime) -format "M/d/yyyy hh:mm:ss tt"
	$Windows_bootTime = Get-Date (Get-CimInstance -ClassName win32_operatingsystem \| select -expand lastbootuptime).tostring().trim() -format "M/d/yyyy hh:mm:ss tt"

omar-yassin / gist:37d08da804da6e7c7787

Created May 6, 2015 15:15

Powershell: Install Patches Example

	# This script will first install the "PSWindowsUpdate" PS Module and then install KBs we specify in this script
	# KB_ID Description
	# KB3042553 MS15-034 Critical: Vulnerability in HTTP.sys Could Allow Remote Code Execution - https://technet.microsoft.com/en-us/library/security/ms15-034.aspx

	# TO DO make it more robust where we can pass kb articles by hash and loop check
	$kb_to_patch="KB3042553"

	$ps_windows_update_zip="C:\Windows\temp\PSWindowsUpdate.zip"
	$ps_modules_dir="C:\Windows\System32\WindowsPowerShell\v1.0\Modules"

	tar ... \| ssh ...

	pipe_exit_status="${PIPESTATUS[@]}"
	tar_status=`echo $pipe_exit_status \| awk '{print $1}'`
	ssh_status=`echo $pipe_exit_status \| awk '{print $2}'`