Chris Snow snowch

Direct links to free Springer books (pdf versions)

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

https://stackoverflow.com/questions/37605278/how-to-determine-if-my-python-requests-call-to-api-returns-no-data

# 1. Test if response body contains sth.
if response.text:
    # ...

# 2. Handle error if deserialization fails (because of no text)
try:
 responses=response.json()

Deploying Elixir and Phoenix applications using Docker and Exrm

Goal

By the end of this quick guide, you will know how to compile a Phoenix app release using Exrm and run it inside a Docker container. I've found only a couple of articles that discuss getting an Elixir app up and running inside a Docker container, and even those only touched on some parts of the process. The idea is that this guide will give you a full end-to-end example of how to get all the pieces and parts working together so that you are able to deploy your Phoenix application inside a Docker container.

Assumptions

You already have a working Elixir environment with the Phoenix Framework installed
You have at least basic working knowledge of Docker, and have installed the Docker tools onto your local environment

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	#!/bin/sh
	#
	# The MIT License (MIT)
	#
	# Copyright (c) 2013 Chris Yuen
	#
	# Permission is hereby granted, free of charge, to any person obtaining a copy
	# of this software and associated documentation files (the "Software"), to deal
	# in the Software without restriction, including without limitation the rights
	# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

	{"level":"info","ts":1600529431.7823222,"logger":"kubedirector","msg":"KubeDirector Version: 0.5.0-unstable"}
	{"level":"info","ts":1600529431.7824512,"logger":"kubedirector","msg":"Go Version: go1.13.7"}
	{"level":"info","ts":1600529431.782459,"logger":"kubedirector","msg":"Go OS/Arch: linux/amd64"}
	{"level":"info","ts":1600529431.7824628,"logger":"kubedirector","msg":"Version of operator-sdk: v0.15.2"}
	{"level":"info","ts":1600529432.0865393,"logger":"controller-runtime.metrics","msg":"metrics server is starting to listen","addr":"0.0.0.0:8383"}
	{"level":"info","ts":1600529432.0867908,"logger":"kubedirector","msg":"Registering Components."}
	{"level":"info","ts":1600529432.0873418,"logger":"kubedirector","msg":"Waiting for client cache sync"}
	{"level":"info","ts":1600529432.0874023,"logger":"kubedirector","msg":"Client cache sync successful"}
	{"level":"info","ts":1600529432.106008,"logger":"kubedirector","msg":"Starting the Cmd."}
	{"level":"info","ts":1600529432.106404,"logger":"controller-runtime.manager","ms

	# want vi to be the default editor for readline
	set editing-mode vi

	# vi settings
	$if mode=vi
	# normal mode
	set keymap vi-command
	# insert mode
	set keymap vi-insert
	"jj": vi-movement-mode # remap escape

	## Check 1# ldapmodify installed or not
	[[ -x $(command -v ldapmodify) ]] \|\| { echo "Please Install Openldap-clients"; exit 1; };

	ssh user@remotehost tcpdump -i eth1 -U -s0 -w - 'not port 22' \| sudo wireshark -k -i -

	ssh user@remotehost tcpdump -i eth1 -U -s0 -w - 'not port 22' \| sudo /Applications/Wireshark.app/Contents/MacOS/Wireshark -k -i -