alvaro893

Tips and Things to do on proxmox server

It might apply to any (debian based) linux

Undervolt GPU / power reduction GPU

your gpu could be card0, card1, cardx, etc. Also check which hwmonX you need to use. First check your current wattage

cat /sys/class/drm/card1/device/hwmon/hwmon3/power1_cap

then reduce it to for example 261w like this

Wayland

software that works well in wayland see https://arewewaylandyet.com/

Fix resolution scaling of (some) GTK applications

on KDE select "Scalling themselves" under "X11 legacy applications" on display settings will fix blurring scaling on most of application but some will look strange (small icons and so on), you can fix it by adding

GDK_SCALE=2 GDK_DPI_SCALE=0.5

as envinroment variables to applications that won't scale correctly.

Arrays

Introduction
Methods
Snippets

1. Introduction

An array is an object in javascript. It has useful method to play with

Enable android debugging over tcp/ip in two steps

connect the phone to the pc using the usb port
Enable adb over network in Developer options
Go to the terminal and look for your phone

adb devices

and then use the device id that you got:

	#include <QObject>
	#include <QTcpServer>
	#include <QTcpSocket>

	/*
	Tcp socket communication example

	Note: the signal writeToSocket is used to write into the last opened socket
	**/

	#!/bin/bash
	FILE=hosts.txt
	sudo nmap -sP -PR 192.168.137.1/24 -oN $FILE
	sed -i '/Host is/d' $FILE
	sed -i '/MAC/d' $FILE
	sed -i 's/Nmap scan report for//g' $FILE
	sort $FILE -o $FILE

	#!/bin/bash
	# from http://www.pyimagesearch.com/2016/10/24/ubuntu-16-04-how-to-install-opencv/
	sudo apt-get install build-essential cmake pkg-config libjpeg8-dev libtiff5-dev libjasper-dev libpng12-dev libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev libgtk-3-dev libatlas-base-dev gfortran python2.7-dev python3.5-dev -y
	wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.1.0.zip

	unzip opencv.zip

	#contribut packages
	wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.1.0.zip
	unzip opencv_contrib.zip

	#!/bin/bash
	# instructions in INSTALL file on repository https://github.com/freedesktop/libqmi/
	git clone https://github.com/freedesktop/libqmi/
	cd libqmi
	git checkout 1.28.2

	# get dependencies libraries (Ubuntu)
	sudo apt-get install glib-networking libmbim-glib-dev autoconf-archive python

	# compilation

	#import <UIKit/UIKit.h>

	@interface ViewController : UIViewController

	@property (weak, nonatomic) IBOutlet UITextField *waterTextField;
	@property (weak, nonatomic) IBOutlet UITextField *ratioTextField;
	@property (weak, nonatomic) IBOutlet UITextField *coffeeTextField;


	- (IBAction)calculateButtonPressed:(id)sender;

	#install it first
	sudo apt install arp-scan

	sudo arp-scan --interface enp0s25 -l