ssendeavour’s gists

ssendeavour / redirect-stdout-and-stderr-through-pipe-with-tee.bash

Created April 15, 2015 15:22

How do I write stderr to a file while using “tee” with a pipe?

	# stackoverflow.com/questions/692000/how-do-i-write-stderr-to-a-file-while-using-tee-with-a-pipe

	command_to_execute 2>&1 \| tee -a log

	# in bash 4
	command_to_execute \|& tee -a log

ssendeavour / GetLastError.cpp

Created July 23, 2014 15:01

show Windows API error text corresponding to number retured by GetLastError. source: http://msdn.microsoft.com/en-us/library/windows/desktop/bb540534(v=vs.85).aspx

	void DisplayError(LPTSTR lpszFunction)
	// Routine Description:
	// Retrieve and output the system error message for the last-error code
	{
	LPVOID lpMsgBuf;
	LPVOID lpDisplayBuf;
	DWORD dw = GetLastError();

	FormatMessage(
	FORMAT_MESSAGE_ALLOCATE_BUFFER \|

ssendeavour / timing.cpp

Created July 12, 2014 14:43

Timing class using C++ 11 and chrono, used to measure time

	#include "Timing.h"

	double Timing::getEllipsedMilliseconds()
	{
	if (m_running)
	{
	setToCurrentTime(m_endTime);
	}
	return static_cast<double>(std::chrono::duration_cast<std::chrono::nanoseconds>(m_endTime - m_startTime).count()) / 1000000.0;
	}

ssendeavour / PrintCurrentDateTime.cpp

Created July 12, 2014 13:46

print current date and time in Windows Visual Studio 2013 with C++11 chrono

	#include <chrono>
	#include <iomanip>
	#include <ctime>

	void PrintLocalTime()
	{
	std::tm tmNow;
	std::chrono::system_clock::time_point now = std::chrono::system_clock::now();
	time_t t = std::chrono::system_clock::to_time_t(now);

ssendeavour / copy-recursively.cpp

Created November 5, 2013 19:28

Copy file and directories recursively in Qt

	//https://qt.gitorious.org/qt-creator/qt-creator/source/1a37da73abb60ad06b7e33983ca51b266be5910e:src/app/main.cpp#L13-189
	// taken from utils/fileutils.cpp. We can not use utils here since that depends app_version.h.
	static bool copyRecursively(const QString &srcFilePath,
	const QString &tgtFilePath)
	{
	QFileInfo srcFileInfo(srcFilePath);
	if (srcFileInfo.isDir()) {
	QDir targetDir(tgtFilePath);
	targetDir.cdUp();
	if (!targetDir.mkdir(QFileInfo(tgtFilePath).fileName()))

ssendeavour / turn-off-screen.sh

Created September 27, 2013 12:18

Turn Off Screen (Works in Ubuntu 12.04.3)

xset dpms force off

ssendeavour / detect-encoding-ython-chardet.py

Last active December 18, 2015 17:39

detect encoding of string in python

	import chardet

	chardet.detect('something中文Chinese')

ssendeavour / Linux backup and reinstall settings and software.sh

Last active December 18, 2015 15:09

Linux下备份及重装系统后还原系统设置和软件, 来自 http://askubuntu.com/questions/9135/best-way-to-backup-all-settings-list-of-installed-packages-tweaks-etc

	## from http://askubuntu.com/questions/9135/best-way-to-backup-all-settings-list-of-installed-packages-tweaks-etc

	dpkg --get-selections > ~/Package.list
	sudo cp /etc/apt/sources.list ~/sources.list
	sudo apt-key exportall > ~/Repo.keys
	rsync --progress /home/`whoami` /path/to/user/profile/backup/here

	## Reinstall now

	rsync --progress /path/to/user/profile/backup/here /home/`whoami`

ssendeavour / Qt Layout and Slot.cpp

Last active December 15, 2015 12:39

Gt QHBoxLayout and slot example C++

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