htruong

#!/bin/bash

# This script allows you to chroot ("work on") 
# the raspbian sd card as if it's the raspberry pi
# on your Ubuntu desktop/laptop
# just much faster and more convenient

# credits: https://gist.github.com/jkullick/9b02c2061fbdf4a6c4e8a78f1312a689

# make sure you have issued

htruong

# raspbian stretch lite on ubuntu

### You can write the raspbian image onto the sd card,
# boot the pi so it expands the fs, then plug back to your laptop/desktop
# and chroot to it with my script 
# https://gist.github.com/htruong/7df502fb60268eeee5bca21ef3e436eb
# sudo ./chroot-to-pi.sh /dev/sdb
# I found it to be much less of a pain in the ass and more reliable
# than doing the kpartx thing

miglen

List of Linux networking tools

netstat (ss)

Displays contents of /proc/net files. It works with the Linux Network Subsystem, it will tell you what the status of ports are ie. open, closed, waiting, masquerade connections. It will also display various other things. It has many different options. Netstat (Network Statistic) command display connection info, routing table information etc. To displays routing table information use option as -r.

Sample output:

Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)    
tcp4 0 0 127.0.0.1.62132 127.0.0.1.http ESTABLISHED

motdotla

Hello World with Spring MVC and Gradle

I am a Ruby and JavaScript developer learning Java. Java-land is vast. There are a number of crufty frameworks and antiquated approaches. Don't get mired in those. Use Spring MVC and Gradle.

What follows is a 'Hello World' application using those Java technologies. Additionally, it does not require the Eclipse IDE which so many other Java tutorials defer to for some reason. I strongly prefer the command line to an IDE.

You can get the finished source of this tutorial here.

Install Gradle

jasongrout

import serve_figure

import numpy as np
from numpy import ma
from matplotlib import pyplot as plt

n = 12

x = np.linspace(-1.5,1.5,n)
y = np.linspace(-1.5,1.5,n*2)