multidis / ubuntu_nodejs_install.sh

Last active December 23, 2015 01:34

Node.js providing `node` and `npm` commands on Ubuntu 14.04.

	# use Node.js-maintained repositories
	# http://www.hostingadvice.com/how-to/install-nodejs-ubuntu-14-04/
	curl -sL https://deb.nodesource.com/setup \| sudo bash -
	sudo apt-get install nodejs

	# update npm
	sudo npm install --global npm@latest

	# verify
	node --version

multidis / brother_setup_ubuntu.md

Created September 26, 2015 00:35

Brother printer/scanner setup on Ubuntu computer as IP printer/scanner.

Setup

Detailed instructions at Brother Linux page.

To change IP address of previously configured scanner

Edit (root priviledges) /opt/brother/scanner/brscan4/brsanenetdevice4.cfg file (could be called slightly differently, see the output of dpkg -l | grep Brother as described in Brother scanner instructions.

Verify updated settings with brsaneconfig4 -q | grep SCANNER.

multidis / itbit_test_keys.py

Last active September 15, 2015 17:29

ItBit REST API example: list wallets for the user account. Testing API keys.

	## itBit private API
	## https://github.com/itbit/itbit-restapi-python/blob/master/example.py
	from itbit_api import itBitApiConnection
	import json

	# private API keys
	with open('exchange_private.json') as f:
	exchdata = json.load(f)
	ticksymb = exchdata['ticker']
	client_key = exchdata['client_key']

multidis / docker_cp_host_to_container.sh

Created September 5, 2015 01:40

File copy workaround from host to docker container (`docker cp` works from container to host, not other way around).

	#https://forums.docker.com/t/will-docker-cp-command-work-for-copying-files-from-host-to-a-container/2022/2
	cat /local/file/path \| docker exec -i <running-container-id> sh -c 'cat > /inside/docker/file/path'

multidis / 10_julia_pmap_funarray.jl

Last active August 29, 2015 14:25

Parallel processing of a list of functions with `pmap`. Start Julia session with e.g. `julia -p 4`.

	## keep in mind @everywhere

	a = Array(Function, 5)

	# example function to generate closures for a-elements
	@everywhere fpo(x::Float64, n::Int64) = x^n

	# function that will be applied to each element of a
	@everywhere bb(f::Function) = f(2.0)

multidis / julia_fun_optarg_vararg.jl

Last active October 12, 2015 23:31

Optional arguments and vararg-functions in Julia: a collection of what is not immediately obvious in the docs.

	# optional arguments are collected as an array, not dictionary
	ff(a, b; optargs...) = optargs
	aa = ff(2, 3, u=1, z="qq")
	#2-element Array{Any,1}:
	# (:u,1)
	# (:z,"qq")

	# can add only (Symbol, Any) tuples in that array
	push!(aa, (:newarg, 95.8))

multidis / aws_s3_ls.sh

Last active March 22, 2024 07:30

List of files in a specific AWS S3 location in a shell script.

	#!/bin/bash

	# setup AWS CLI first
	# http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-set-up.html

	# configure AWS CLI (e.g. use IAM role for S3 access)
	export AWS_DEFAULT_REGION=us-east-1
	export AWS_ACCESS_KEY_ID=IDHERE
	export AWS_SECRET_ACCESS_KEY=KeyHere

multidis / Dockerfile

Last active September 15, 2021 12:24

Cron job scheduling inside a Docker container.

	# phusion baseimage initiates cron properly

	# Use phusion/baseimage as base image. To make your builds reproducible, make
	# sure you lock down to a specific version, not to `latest`!
	# See https://github.com/phusion/baseimage-docker/blob/master/Changelog.md for
	# a list of version numbers.
	FROM phusion/baseimage:0.9.16

	# Use baseimage-docker's init system.
	CMD ["/sbin/my_init"]

multidis / aws_s3_simple.py

Last active August 29, 2015 14:19

Simple way of working with files in S3 bucket in Python. For more complex operations use boto.

	## https://www.smore.com/labs/tinys3/
	## http://stackoverflow.com/questions/25602415/upload-to-amazon-s3-using-tinys3

	import tinys3

	# access credentials: make create user for s3 read or full access
	# can restrict to a specific bucket if needed as well
	access_key = 'keyhere'
	secret_key = 'secrethere'

multidis / gcloud_sdk_docker_setup.sh

Last active August 29, 2015 14:18

Development environment setup with Google Cloud SDK + Docker for Google App Engine custom runtime Virtual Machine. Tested on Ubuntu 12.04. NOTE: not using VirtualBox, using native local Docker process instead.

	# Linux docker for App Engine without VirtualBox
	# http://stackoverflow.com/questions/27118022/how-to-use-gcloud-preview-app-run-without-boot2docker
	# add to /etc/default/docker:
	# DOCKER_OPTS="-d -H unix:///var/run/docker.sock -H tcp://localhost:2375"
	# apply the change:
	sudo service docker restart

	# add to ~/.bashrc:
	export DOCKER_HOST=tcp://localhost:2375
	# verify in new shell

Pavel Paramonov multidis

Setup

To change IP address of previously configured scanner