calvin2021y

How to Download iOS Simulator (Xcode) in Command Line and Install it

For faster connection speed and more flexibility.

Steps

Start Xcode in command line by running this in commandline /Applications/Xcode.app/Contents/MacOS/Xcode
Start downloading of the simulator
Cancel it. YES CANCEL IT!
You will get a message like this:

Here's how to set up a Windows 10 virtual machine in KVM with PCI passthrough. The VM will have access to an NVIDIA graphics card while the host machine (running Debian Buster) uses Intel integrated graphics. This is mostly for my own reference so I don't forget how I did it.

Hardware

Intel i5 (an old one) with integrated graphics: this will be used as the graphics card for the host machine running Debian Buster
NVIDIA Geforce 1070: this will be used as the graphics card for the Windows 10 VM

Step 1: Enable IOMMU

In order to do hardware passthrough with KVM at all, you need to enable the Intel Vt-d virtualization extensions. Edit /etc/default/grub and edit the GRUB_CMDLINE_LINUX_DEFAULT line so that it reads like:

pg_dump is a nifty utility designed to output a series of SQL statements that describes the schema and data of your database. You can control what goes into your backup by using additional flags.
Backup: pg_dump -h localhost -p 5432 -U postgres -d mydb > backup.sql

Restore: psql -h localhost -p 5432 -U postgres -d mydb < backup.sql

-h is for host.
-p is for port.
-U is for username.
-d is for database.

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

This is a simple example program using the foundationdb C API. Its written & tested on macos; but it should be easy to adapt to work on BSD / linux.

This also demonstrates using libuv to integrate foundationdb into a run loop. Promises are run in the main libuv loop.

Compile with

$ clang test.c -Wall -lfdb_c -I/usr/local/include -luv

Backup android app, data included, no root needed, with adb

adb is the Android CLI tool with which you can interact with your android device, from your PC

You must enable developer mode (tap 7 times on the build version in parameters) and install adb on your PC.

Don't hesitate to read comments, there is useful tips, thanks guys for this !

	# Install Command-line tools as dependency for Homebrew
	xcode-select --install # Sets the development directory path to /Library/Developer/CommandLineTools

	# Install Homebrew
	/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
	# Install Mas (command-line interface for Mac App Store)
	brew install mas

	# Search for Xcode showing only the first 5 results
	mas search xcode \| head -5

	#!/bin/bash
	# Sample usage is as follows;
	# ./signapk myapp.apk debug.keystore android androiddebugkey
	#
	# param1, APK file: Calculator_debug.apk
	# param2, keystore location: ~/.android/debug.keystore
	# param3, key storepass: android
	# param4, key alias: androiddebugkey

	USER_HOME=$(eval echo ~${SUDO_USER})

	/*
	For any 1<k<=64, let mask=(1<<k)-1. hash_64() is a bijection on [0,1<<k), which means
	hash_64(x, mask)==hash_64(y, mask) if and only if x==y. hash_64i() is the inversion of
	hash_64(): hash_64i(hash_64(x, mask), mask) == hash_64(hash_64i(x, mask), mask) == x.
	*/

	// Thomas Wang's integer hash functions. See <https://gist.github.com/lh3/59882d6b96166dfc3d8d> for a snapshot.
	uint64_t hash_64(uint64_t key, uint64_t mask)
	{
	key = (~key + (key << 21)) & mask; // key = (key << 21) - key - 1;

	## Place this file in "/etc/sysctl.d/network-tuning.conf" and
	## run "sysctl -p" to have the kernel pick the new settings up

	# Avoid a smurf attack
	net.ipv4.icmp_echo_ignore_broadcasts = 1

	# Turn on protection for bad icmp error messages
	net.ipv4.icmp_ignore_bogus_error_responses = 1

	# Turn on syncookies for SYN flood attack protection