riyad’s gists

riyad / firewall.npt6

Last active June 12, 2025 10:54

OpenWRT firewall script to configure network prefix translation for IPv6

	#!/bin/sh
	#
	# Author: Riyad Preukschas <[email protected]>
	# License: Mozilla Public License 2.0
	# SPDX-License-Identifier: MPL-2.0
	#
	# OpenWRT firewall script for configuring NPTv6 (network prefix translation).
	#
	# # Installation
	#

riyad / lsswap

Last active January 10, 2022 14:32

List all processes and how much swap they use.

	#!/bin/bash
	#
	# Riyad Preukschas <[email protected]>
	# License: Mozilla Public License 2.0
	# SPDX-License-Identifier: MPL-2.0
	#
	# List all processes and how much swap they use.
	# The output format is: "<swap used> : <pid> : <process name>"
	#
	# To get the top 10 processes using swap you can run:

riyad / zrepl-run-and-wait-for-job-with-progress.sh

Last active December 26, 2022 19:07

Run a zrepl job and block/wait until it's finished.

	#!/bin/bash
	#
	# Author: Riyad Preukschas <[email protected]>
	# License: Mozilla Public License 2.0
	#
	# Run a zrepl job and block/wait until it's finished (with progress indication).
	#
	# Note: this is basically a hack until there's a properly integrated solution for this.
	# see https://github.com/zrepl/zrepl/issues/427

riyad / email_from_imap.py

Created May 27, 2020 10:02

Scaffolding for fetching and parsing emails from IMAP

	#!/usr/bin/python3
	#
	# Author: Riyad Preukschas <[email protected]>
	# License: Mozilla Public License 2.0
	#
	# Scaffolding for fetching and parsing emails from IMAP

	import imaplib
	import email.parser
	import email.policy

riyad / ffmpeg-cut

Last active November 17, 2018 22:16

Cut out a part of a media file within the given time stamps (without converting or reencoding!)

	#!/bin/bash
	#
	# Author: Riyad Preukschas <[email protected]>
	# License: Mozilla Public License 2.0
	#
	# Cuts out a part of a media file within the given time stamps (without converting or reencoding!).


	set -o nounset # complain when reading unset vars
	# set -o xtrace # print every command as it's executed

riyad / README.md

Last active April 6, 2017 15:56

a helper for creating list of 'HH:MM' for the `at` option of `Clockwork.every` with alignment and hour ranges

Use this in your clock.rb file:

require 'clockwork'

include ClockHelper

module Clockwork
  # ...
 every 1.day, "do_something", at: steps(every: 3.hours, aligned_at: '01:32') do

riyad / cleanup_redis_uniquejobs.rb

Last active May 13, 2019 12:18

Cleanup Sidekiq uniquejobs in Redis (see https://github.com/mhenrixon/sidekiq-unique-jobs/issues/195)

	#!/usr/bin/env ruby
	#
	# Cleanup Sidekiq uniquejobs in Redis
	# see https://github.com/mhenrixon/sidekiq-unique-jobs/issues/195
	#
	require 'bundler/setup'
	require 'sidekiq/api'

	DRY_RUN = true

riyad / extract-audio.sh

Last active November 17, 2018 22:19

Extract audio from any media file ffmpeg can play into a new one (without converting or reencoding!)

	#!/bin/sh
	#
	# Author: Riyad Preukschas <[email protected]>
	# License: Mozilla Public License 2.0
	#
	# Extract audio from any file ffmpeg can play (without converting or reencoding!).


	if [[ $# -ne 3 ]]; then
	echo "Error: wrong number of arguments"

riyad / Application.mk

Last active September 23, 2020 13:38

Build Rsync for Android with Android NDK

	APP_ABI := armeabi-v7a arm64-v8a
	APP_OPTIM := release
	APP_BUILD_SCRIPT := $(NDK_PROJECT_PATH)/Android.mk
	APP_PLATFORM := android-29

riyad / another-intermediate-ca_csr.json

Last active November 17, 2018 22:35

Using CFSSL building your own CA and generating service specific key, cert and chain files.

Riyad Preukschas riyad