Fedor Melekhin melehin

melehin / linuxcnc-modbus-encoder-esp32s2.ino

Created September 9, 2024 06:04

	/*
	Linuxcnc ModbusRTU Encoder for ESP32 S2

	(c)2024 Fedor Melekhin

	Use linuxcnc part (linuxcnc folder and config from README) from https://github.com/futurelink/linuxcnc-spindle-encoder

	This code is licensed under the BSD New License
	*/

melehin / build.sh

Created September 30, 2021 12:16

How to create Python executable with dependencies inside one file (statically linked, linux)

	pip3 install pyinstall staticx

	pyinstall --onefile script.py
	# Static executable with deps
	staticx dist/script dist/script.static

melehin / renew_cert.sh

Created August 2, 2021 07:58

using acme-tiny with apache2. split signed_chain.crt into separate files.

	#!/bin/bash

	cd /root/acme_tiny
	python ./acme_tiny.py --account-key ./account.key --csr ./domain.csr --acme-dir /var/www/challenges/ > ./signed_chain.crt.tmp \|\| exit
	mv ./signed_chain.crt.tmp ./signed_chain.crt

	# Split signed_chain.crt into two files domain_signed.pem and chain.pem
	# for apache2 support
	python -c 'f = open("signed_chain.crt", "r"); l = f.read(); f.close(); end = "\n\n"; certs = l.split(end); f = open("domain_signed.pem", "w"); f.write(certs[0]+"\n"); f.close(); f = open("chain.pem", "w"); f.write(end.join(certs[1:])+"\n"); f.close()'

melehin / build_deps.sh

Last active September 4, 2020 03:03

Build Hasura 1.3.1 (graphql-engine) on rpi4/jetson nano (arm64/aarch64)

	#!/bin/bash

	# Ubuntu 18.04

	apt install libncurses5 git build-essential llvm wget libnuma-dev zlib1g-dev libpq-dev postgresql-client-common postgresql-client libkrb5-dev libssl-dev

	wget https://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-aarch64-deb9-linux.tar.xz
	wget http://downloads.haskell.org/~cabal/cabal-install-3.2.0.0/cabal-install-3.2.0.0.tar.gz

	tar xf ghc-8.10.1-aarch64-deb9-linux.tar.xz && tar xzf cabal-install-3.2.0.0.tar.gz

melehin / gist:61699aafeab6381201b87c3ee0f4fa0c

Created May 16, 2020 07:13

Получение query параметра запроса для Yandex Cloud Functions по имени. Возвращает None если параметр не найден

	def get_query_from_event(name, event):
	if 'queryStringParameters' in event and name in event['queryStringParameters']:
	return event['queryStringParameters'][name]

	return None