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#!/usr/bin/python

import sys, getopt
import subprocess
import string
import pdb

# install AWS cli https://aws.amazon.com/cli/
# usage example :
# python aws_clean.py -p "jongla/broadcast" -b "coverimagedevsg"

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#!/usr/bin/python

import smtplib
import sys, getopt
import pdb

def main(argv):
    helpMsg = """sendmail.py -c <smtp_srv> -o <smtp_port> -u <smtp_user> -p <smtp_passwd>
        -s <mail_sender> -r <mail_recepients> -m <mail_msg>
"""

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%% @doc replaces 'null' value with specified replacement in hieracy list tree
%% list elements can contain tuples
-spec replace_null(Replacement :: term(), InputTree :: list(), Accumulator :: list()) -> Result when
    Result :: list().
%% --------------------------------------------------------
%% manual testing : 
%%     > R = [[<<"username">>,<<"jid">>,<<"nick">>,<<"last">>,
%%               <<"subscription">>,<<"ask">>,<<"askmessage">>,<<"server">>,
%%               <<"subscribe">>,<<"type">>],
%%              [{<<"XXXXXXXXXXX">>,<<"AAAAAAAAAAA@im.domain.im">>,<<" ">>,

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from Queue import PriorityQueue
"""
matrix=[['#', '#', '#', '#', '#', '#', '#', '#', '#', '#'], 
        ['@', '.', '#', '.', '.', '.', '.', '.', '.', '#'], 
        ['#', '.', '.', '.', '#', '#', '.', '.', '.', '#'], 
        ['#', '.', '.', '.', '#', '#', '.', '#', '.', '#'], 
        ['#', '#', '.', '.', '#', '#', '.', '.', '.', '#'], 
        ['#', '#', '#', '.', '#', '#', '.', '#', '#', '#'], 
        ['#', '.', '.', '.', '.', '.', '.', '.', '.', '#'], 
        ['#', '.', '.', '.', '.', '#', '#', '#', '.', '#'], 

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'use strict';

// https://github.com/aws/aws-sdk-js
// http://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/creating-and-calling-service-objects.html
// http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/
// http://docs.amazonaws.cn/en_us/AWSJavaScriptSDK/guide/node-making-requests.html
var AWS = require('aws-sdk');

var s3 = new AWS.S3({
    apiVersion: '2006-03-01'

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var JSZip = require("jszip");
var fs = require('fs');

module.exports = {
  
  // Replaces or adds 'replacementFname' into archive 'zipFname' with 
  // content obtained from 'contentFname' file. 
  // Creates new file 'updated.zip' in the current directory
  // for example :
  //      xxx.updatezip('test_suite.zip', 'scenario.xml', 'rooster/scenarios/rooster.xml')

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Kubernetes clusters using preemtible instances

Motivation

People experimenting with kubernetes clusters on the GKE not necessarily have money to keep a full cluster on at all time. GKE clusters can be easily resized, but this still incurs in the full instance cost when the cluster is up.

Google has added preemptible instances that are ideal for many

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# ... YOUR Dockerfile definition here

# wait for dependecy ready
RUN curl -s https://raw.githubusercontent.com/eficode/wait-for/master/wait-for -o /tmp/wait-for
RUN chmod 754 /tmp/wait-for
RUN apt-get update
RUN apt-get install -y netcat

# docker inspect --format="{{json .State.Health}}" sakani-projects-graphql
HEALTHCHECK --start-period=30s --retries=10 --timeout=1m CMD \

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Purpose

• This section outlines the necessary steps to write a simple native "Hello World!" JNI-enabled Android application.

• This section assumes you have read and followed the steps in Compiling C/C++ code directly from Android Studio

Writing JNI functions

1. Create a new Android Studio project. To do so, select File -> New -> New Project.

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Often referred to as the "swiss army of knife" for TCP/IP networking, [Netcat][1] is an extremely versatile Linux utility that allows you to do anything under the sun using TCP/UDP sockets. It is one of the most favorite tools for system admins when they need to do networking related troubleshooting and experimentation.

In this tutorial, I am sharing a few useful netcat examples, although the sky is the limit when it comes to possible netcat use cases. If you are using netcat regularly, feel free to share your use case.

Note that when you are binding to well-known ports (0-1023) with nc, you need root privilege. Otherwise, run nc as a normal user.

1. Test if a particular TCP port of a remote host is open.

$ nc -vn 192.168.233.208 5000