Nitin Rai imneonizer

How to find disk usage information on linux

Install this simple tool ncdu for linux

sudo apt install ncdu

After this simply run the command:

sudo ncdu -x /

How to change linux hostname

Reference: ubuntu-change-hostname-command

modify the /etc/hostname file and change the hostname to as per your choice.
```
sudo vim /etc/hostname
```

Find all the available mountable file drives on your system:

sudo fdisk -l

output:

Disk /dev/ram0: 8 MiB, 8388608 bytes, 16384 sectors

What is tmux

tmux is a ssh session logging/sharing tool which we can use to reconnect to a ssh session even if we lost the connection in between.

How to install

First we need to install it in the remote machine, to do so ssh into the remote machine and run this command

sudo apt-get install tmux

For Example:

1. Automatic authentication to remote machine

Note:- with this you don't need to type password every time to do the ssh connection.

Step One—Create the RSA Key Pair (your machine)

ssh-keygen -t rsa

Step Two—Store the Keys and Passphrase (your machine)

How To Publish Your PyPi Package

The PyPi package index is one of the properties that makes python so powerful, with just a simple command, you get access to thousands of cool libraries, ready for you to use. I am going to show you how you can upload your own package.

Create a python package

To create a package, create a folder that is named exactly how you want your package to be named. Place all the files and classes that you want to ship into this folder.

	import cv2

	def VideoCapture(uri, width, height, latency):
	gst_str = ('rtspsrc location={} latency={} ! '
	'rtph264depay ! h264parse ! omxh264dec ! '
	'nvvidconv ! '
	'video/x-raw, width=(int){}, height=(int){}, '
	'format=(string)BGRx ! '
	'videoconvert ! appsink').format(uri, latency, width, height)
	return cv2.VideoCapture(gst_str, cv2.CAP_GSTREAMER)

	import numpy as np
	import cv2
	import textwrap

	img = np.zeros((500,500,3), dtype='uint8')
	print(img.shape)

	height, width, channel = img.shape

	text_img = np.ones((height, width))

	import cv2
	import sys
	import imutils

	#-----Reading the image-----------------------------------------------------
	img = cv2.imread('1.jpg')
	#img = imutils.resize(img, width=400)
	#cv2.imshow("img",img)

	#-----Converting image to LAB Color model-----------------------------------

	{
	"pushitbot": "558fc32f64b2adaf889bc29bb97d8150"
	}