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@gabonator
gabonator / filter.py
Created November 3, 2023 09:15
Simple string filtering algorithm
# During data processing you will face a situation when you will
# need to filter out some data based on string comparison (e.g. process
# only file names which pass some condition). Things get more complicated
# if the condition is meant to be provided by user or as a CLI argument.
#
# Some of the popular methods are following:
# - wildcard matching (e.g. "*.jpg" which will return only jpeg files)
# - regex (e.g. ".*\.jpg")
# - code (e.g. filename.substr(-4) == ".jpg")
#
@gabonator
gabonator / buildcert.sh
Created September 7, 2023 07:40
file lister server with ssl in python
cd certificate
openssl genrsa -out key.pem
openssl req -new -key key.pem -out csr.pem
openssl x509 -req -days 9999 -in csr.pem -signkey key.pem -out cert.pem
@gabonator
gabonator / rete.html
Created August 15, 2023 15:53
rete experiment with OOK signal processing
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/rete.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.14/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/vue-render-plugin.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/connection-plugin.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/alight.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/area-plugin.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/context-menu-plugin.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/comment-plugin.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/history-plugin.min.js"></script>
@gabonator
gabonator / Classes.h
Created August 5, 2023 08:52
hcs200 decoder test for la104/rftool
#pragma once
#include "Types.h"
class CPoint {
public:
int x, y; // TODO: !!!
CPoint()
{
}
CPoint(int _x, int _y) :
@gabonator
gabonator / kibaja.js
Created July 26, 2023 10:32
elastic search test
// Create sample elastic search database for kibana
// To add new endpoint into kibana:
// Menu (top left) -> Stack management -> Index patterns (Kibana) ->
// Create index pattern (top right) -> "test_endpoint3" -> Timestamp field -> Create index pattern
// To check recent data:
// Menu (top left) -> Discover -> "test_endpoint3"
// To allow elastic search listening on 0.0.0.0 interface add:
// -Djava.net.preferIPv4Stack=true
// to
@gabonator
gabonator / bmc_entity_manager.sh
Last active July 25, 2023 08:26
bmc entity manager setup script
# Install BMC entity manager and activates some randomly chosen configuration
# Adds fake temperature sensor
# setup for Ubuntu 23 with GCC-13
#
set -e -x
sudo apt-get -y update
sudo apt-get -y upgrade
sudo apt-get install -y libpam0g-dev libsystemd-dev python3 python3-pip python3-inflection python3-mako python3-yaml g++-13 gcc-13 libi2c-dev libboost-all-dev libdbus-1-dev ninja-build cmake libssl-dev libtinyxml2-dev
sudo apt-get install -y libgtest-dev
@gabonator
gabonator / gccstdversion.sh
Last active July 12, 2023 13:38
gcc check standard version
# Requesting c++20 standard in gcc commandline does not ensure that it is supported or will be used,
# dumping the __cplusplus reveals that gcc completely ignores this request without any warning or error
# Such problems leads to similar error messages:
# main.cpp:1:24: error: ‘bit_cast’ is not a member of ‘std’; did you mean ‘bad_cast’?
#
#
# This shell script prints
# #define __cplusplus 202002L
# or
# #define __cplusplus 201709L
@gabonator
gabonator / gtest.sh
Created June 29, 2023 09:46
google test cross compile minimal setup with cmake
cat > main.cpp <<- EOM
#include <gtest/gtest.h>
TEST(group, name)
{
printf("Hello!\n");
}
EOM
cat > CMakeLists.txt <<- EOM
FROM node:10-alpine
RUN mkdir -p /src/app
WORKDIR /src/app
COPY package.json /src/app/package.json
RUN npm install
COPY . /src/app
EXPOSE 3000
@gabonator
gabonator / rle.c
Created February 14, 2023 10:05
run length encoder/decoder
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include "testrle.h"
typedef uint8_t UINT8;
typedef int INTN;
typedef void VOID;
#define ASSERT assert