RainMark / bash_strict_mode.md

Created March 1, 2024 10:25 — forked from mohanpedala/bash_strict_mode.md

set -e, -u, -o, -x pipefail explanation

	# sourcing this file will define a bash functions that
	# tries to run subsequent calls to emacs with 24 bit color.
	#
	# It sets TERM=xterm-emacs-leg if
	# - we've created a user-local terminfo record for xterm-emacs-leg, and
	# - we're using iTerm2 or something has set COLORTERM=truecolor
	#
	# This will cause emacs to use 24 bit color only when it will work,
	# inside or outside of tmux. I haven't found a way to auto-detect Blink.sh yet.
	#

RainMark / httpsrv.py

Created January 4, 2023 06:14 — forked from darkr4y/httpsrv.py

python simple http server with upload & download

	#!/usr/bin/env python

	"""Extend Python's built in HTTP server to save files

	curl or wget can be used to send files with options similar to the following

	curl -X PUT --upload-file somefile.txt http://localhost:8000
	wget -O- --method=PUT --body-file=somefile.txt http://localhost:8000/somefile.txt

	__Note__: curl automatically appends the filename onto the end of the URL so

RainMark / anybind_aio.py

Created November 12, 2021 10:36 — forked from toke/anybind_aio.py

Using TPROXY to bind to any port on many IPs (asyncio variant)

	import asyncio
	import socket

	BIND_IP = "127.0.0.1"
	TCP_PORT = 1234
	SOCK_BACKLOG = 32
	IP_TRANSPARENT = 19

	desc = f"""
	Anybind; "bind" on many IPs and many Ports.

RainMark / snat_dnat_advantech.md

Created November 12, 2021 01:47 — forked from tomasinouk/snat_dnat_advantech.md

examples of SNAT, DNAT with iptables for Advantech, Conel routers, with comments (probably will work on other routers where iptables can be manipulated, care needs to be taken on applying these commands after reboot).

Some examples of SNAT, DNAT with iptables with comments

mainly used in start-up script

masquarade all outgoing packets to be WLAN0 IP

iptables -t nat -A PREROUTING -s 192.168.1.2 -i eth0 -j MASQUERADE

All packets leaving eth0 will have src eth0 ip address

RainMark / macros.el

Created July 22, 2020 03:09 — forked from caiorss/macros.el

Emacs Lisp/Elisp Macro Examples

	;; Elisp session in REPL IELM
	;;
	;;
	;;

	ELISP> (defmacro inc (var)
	(list 'setq var (list '1+ var)))
	inc
	ELISP> (setq x 0)
	0 (#o0, #x0, ?\C-@)

RainMark / deploy-automated-hadoop-setup-on-lxd.sh

Created May 11, 2017 12:35 — forked from ruanbekker/deploy-automated-hadoop-setup-on-lxd.sh

Sets up a Hadoop 3 Node Cluster with LXC Containers on LXD (Automated Install)

	#!/bin/bash
	set -ex

	UBUNTU_VERSION="14.04"

	mkdirs(){
	lxc delete hadoop-master --force
	lxc delete hadoop-slave-1 --force
	lxc delete hadoop-slave-2 --force
	rm -rf /tmp/*

	#! /usr/bin/env bash
	#
	# Run parallel commands and fail if any of them fails.
	#

	set -eu

	pids=()

	for x in 1 2 3; do

RainMark

Table of Contents

set -e, -u, -x, -o pipefail

Some examples of SNAT, DNAT with iptables with comments

masquarade all outgoing packets to be WLAN0 IP

All packets leaving eth0 will have src eth0 ip address