Paul Samsotha psamsotha

Basic Syntax

$ scp source_file_path destination_file_path

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Comprehensive Introduction to @ngrx/store

By: @BTroncone

Also check out my lesson @ngrx/store in 10 minutes on egghead.io!

Update: Non-middleware examples have been updated to ngrx/store v2. More coming soon!

Table of Contents

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

	# define base image as python slim-buster.
	FROM python:3.7-slim-buster as base

	## start builder stage.

	# this is the first stage of the build.
	# it will install all requirements.
	FROM base as builder

	# install all packages for chromedriver: https://gist.github.com/varyonic/dea40abcf3dd891d204ef235c6e8dd79

	#
	# Oracle Java 7 Dockerfile
	#
	# https://github.com/dockerfile/java
	# https://github.com/dockerfile/java/tree/master/oracle-java7
	#

	# Pull base image.
	FROM alpine as build

	# From https://github.com/github/gitignore/blob/master/Gradle.gitignore
	.gradle
	/build/

	# Ignore Gradle GUI config
	gradle-app.setting

	# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
	!gradle-wrapper.jar

	configurations {
	mavenEmbedder
	}

	dependencies {
	compile "org.apache.maven:maven-core:$mavenVersion"
	compile "org.apache.maven:maven-plugin-api:$mavenVersion"
	compile 'org.apache.maven.plugin-tools:maven-plugin-annotations:3.4'

	mavenEmbedder "org.apache.maven:maven-embedder:$mavenVersion"

	<%@ page language="java" pageEncoding="UTF-8" contentType="text/html;charset=UTF-8" %>
	<!DOCTYPE html>
	<html>
	<head>
	<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
	<script src="//blueimp.github.io/jQuery-File-Upload/js/vendor/jquery.ui.widget.js"></script>
	<script src="//blueimp.github.io/JavaScript-Load-Image/js/load-image.all.min.js"></script>
	<script src="//blueimp.github.io/JavaScript-Canvas-to-Blob/js/canvas-to-blob.min.js"></script>
	<script src="//blueimp.github.io/jQuery-File-Upload/js/jquery.iframe-transport.js"></script>
	<script src="//blueimp.github.io/jQuery-File-Upload/js/jquery.fileupload.js"></script>


	FILE SPACING:

	# double space a file
	sed G

	# double space a file which already has blank lines in it. Output file
	# should contain no more than one blank line between lines of text.
	sed '/^$/d;G'

	NAME=project
	VERSION=0.0.1

	DIRS=etc lib bin sbin share
	INSTALL_DIRS=`find $(DIRS) -type d 2>/dev/null`
	INSTALL_FILES=`find $(DIRS) -type f 2>/dev/null`
	DOC_FILES=.md .txt

	PKG_DIR=pkg
	PKG_NAME=$(NAME)-$(VERSION)