Skyedragon

show sda sdb devices: 
lsblk

unmount your device:
sudo umount /dev/sda1

sudo dd if=artful-desktop-amd64.iso of=/dev/sda bs=1M status=progress

you are awesome!

Skyedragon

to install software

sudo add-apt-repository -y ppa:myriadrf/drivers

sudo apt-get update

sudo apt-get install python3-numpy python3-scipy soapysdr-tools python3-soapysdr

sudo apt-get install python-dev swig

Skyedragon

timeshift - program for restore points for Linux

sudo add-apt-repository -y ppa:teejee2008/ppa - to add repository

sudo apt-get update --allow-insecure-repositories - to download stuff from unsecured repos

sudo apt install timeshift

sudo timeshift-gtk - start timeshift with GUI

Skyedragon

#this function takes symbol and change it to another in the given file
def symbolchange(old_file, new_file, old_symbol, new_symbol):
      with open(new_file, "w", encoding = 'utf-8') as f:
          for line in fileinput.input([old_file], inplace = False):
              f.write(line.replace(old_symbol, new_symbol))

Skyedragon

import numpy as np
from scipy.fftpack import fft
import matplotlib.pyplot as plt

# Number of sample points
N = 600
# sample spacing
T = 1.0 / 800.0
x = np.linspace(0.0, N*T, N)
y = np.sin(10.0 * 2.0*np.pi*x) + 0.5*np.sin(80.0 * 2.0*np.pi*x)

Skyedragon

'''
This program was created during and for Vactanilad
It drives the stepper motors using ethernet connection to GSI network (TCP protocol)

Useful commands:
@ - start of the command: @03
0 - number of machine
@03 - initialize both axis, X and Y
R,r - return to 0
A,a = move to absolute coordinate IN STEPS

Skyedragon

\textquotedbl A resonant Schottky pickup for the study of highly charged ions in storage rings." Phys. Scripta T156 (2013) 

will give

"A resonant Schottky pickup for the study of highly charged ions in storage rings." Phys. Scripta T156 (2013) 

All other methods will give `` '' like German quotes

Skyedragon

#!/usr/bin/env python
#coding=utf8
from numpy import array, arange, abs as np_abs
from numpy.fft import rfft, rfftfreq
from numpy.random import uniform
from math import sin, pi, cos
import matplotlib.pyplot as plt

# а можно импортировать numpy и писать: numpy.fft.rfft
FD = 22050 # частота дискретизации, отсчётов в секунду