NorbertFenk’s gists

NorbertFenk / gcp-docker-image-mover.sh

Last active July 2, 2019 17:25

	#!/usr/bin/env bash

	# According to this documentation https://cloud.google.com/container-registry/docs/managing you can move images
	# but the gcloud command with add tag option will handle only one tag at a time
	# The "if while for" magic will handle multiple tags by retagging the same image.

	# Supported input which is provided by the list-tags command:
	# 0.2.63
	# 0.2.60;0.2.61
	# 0.2.59

NorbertFenk / fork-cpp-example.cpp

Created July 25, 2018 08:20

Short program to show forking in C++ and how to create zombie process.

	#include <iostream>
	#include <unistd.h>

	int main()
	{
	std::cout << "------ program started ------" << std::endl;

	int counter = 0;
	pid_t pid = fork();

NorbertFenk / QtTestBenchmarkWithCMake.txt

Last active June 22, 2018 13:44

QtTest benchmark with CMake

	https://stackoverflow.com/a/23560316/5789008

	------------------ CMakeLists.txt ------------------
	cmake_minimum_required(VERSION 3.9)
	project(qt_perf_test_with_cmake)

	enable_testing()

	set(CMAKE_AUTOMOC ON)

NorbertFenk / git bisect hands-on

Created May 25, 2018 11:41

Short example for the git bisect command.

	https://git-scm.com/docs/git-bisect
	https://dockyard.com/blog/2016/07/26/how-to-bisect-ember
	example
	cd <git directory>
	git bisect start
	git bisect bad // this command will assume the HEAD in this case
	git bisect good <commit id of a good commit>
	git bisect run ./<arbitrary scrip>
	e.g.
	```

NorbertFenk / multiple-branch-rebase.sh

Last active April 7, 2018 18:10

Multiple branch rebase to a dedicated branch. Checkout the target branch and use the script.

	#!/bin/bash

	# checkout the target branch
	# ./multiple-branch-rebase.sh <branch1> <branch2> ...

	set -e

	TARGET_BRANCH=$(git rev-parse --abbrev-ref HEAD)

	for BRANCH in "$@"; do

NorbertFenk / Install Google Test for Linux

Created March 14, 2018 08:00

	Download the requested version: https://github.com/google/googletest/releases

	tar -xzvf <GTEST-FOLDER>.tar.gz

	cd <UNZIPPED-FOLDER>
	mkdir build
	cd build
	cmake -G"Unix Makefiles" .. # By default the CMake try to identify the system so the -G"Unix Makefiles" optionally
	make install # If needed use super user previlige

NorbertFenk / deleteFilesFromInput.sh

Created February 9, 2018 11:46

If you accidentally hit cmake before "cd build" and you really do not know how to "mass" checkout folders and files this will help a lot.

	#!/bin/bash
	# source: https://stackoverflow.com/questions/10929453/read-a-file-line-by-line-assigning-the-value-to-a-variable

	while IFS='' read -r line \|\| [[ -n "$line" ]]; do
	rm -rf $line
	done < "$1"

NorbertFenk / set_difference_custom_implementation.cpp

Last active February 1, 2018 23:11

	#include <iostream>
	#include <vector>
	#include <algorithm>
	#include <chrono>
	#include <ratio>

	// NOTE source: https://www.fluentcpp.com/2018/01/12/how-is-stdset_difference-implemented/

	template<typename InputIterator1, typename InputIterator2, typename OutputIterator>
	OutputIterator mySetDifference(InputIterator1 first1, InputIterator1 last1,

NorbertFenk / load_json_qt.cpp

Created January 22, 2018 13:58

Simple Qt based JSON file loading

	QVariant loadJson(const QString &path)
	{
	QFile file(path);

	if (!file.open(QIODevice::ReadOnly \| QIODevice::Text)) {
	throw Exception(QStringLiteral("Could not open file"));
	}

	QByteArray input = file.readAll();
	file.close();

NorbertFenk / generateIpFromInt.cpp

Created December 5, 2017 22:37

Simple funtion which can generate valid ip4 address from a simple int.

	#include <QDebug>

	QString generateIpFromInteger(quint32 ip)
	{
	QString ipString;

	for (int i = 0; i < 4; ++i) {
	ipString.insert(0, QString::number(ip & 0xff));

	if (i < 3) {

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