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This is an outdated draft that was used to review the content with FreeBSD contributors. For the latest revision, vist http://shawndebnath.com/articles/2016/03/27/freebsd-jails-with-vlan-howto.html.

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FreeBSD Jails with VLAN HOWTO

This article discusses how to set up jails on a FreeBSD 11-CURRENT system utilizing VIMAGE (aka VNET) to provide a virtualized independent network stack for each jail with support for VLAN tagging.

Prerequisites

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Some Jenkinsfile examples

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def getProjectName() {
    return 'JenkinsPipeline'
}

def getJDKVersion() {
    return 'jdk1.8.0_101'
}

def getMavenConfig() {
    return 'maven-config'

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# CMake Toolchain file for cross compilation to Alpine 3.7 running on a Raspberry Pi via LLVM.
# Dec. 2017, Oliver Kuckertz <oliver.kuckertz@mologie.de>
# https://mologie.github.io/blog/programming/2017/12/25/cross-compiling-cpp-with-cmake-llvm.html
# License: MIT

# Where did you create the Alpine sysroot? Oliver has his cross-toolchains in ~/Toolchains.
SET(CMAKE_SYSROOT "$ENV{HOME}/Toolchains/sysroots/alpine-armhf")

# Where is LLVM/clang installed on your host? These are defaults for common platforms:
IF(APPLE)

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/*
 * This implementation of popen3() was created in 2007 for an experimental
 * mpg123 frontend and is based on a popen2() snippet found online.  This
 * implementation may behave in unexpected ways if stdin/stdout/stderr have
 * been closed or modified.  No warranty of its correctness, security, or
 * usability is given.  My modifications are released into the public domain,
 * but if used in an open source application, attribution would be appreciated.
 * 
 * Mike Bourgeous
 * https://github.com/mike-bourgeous

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Effective Modern CMake

Getting Started

For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.

After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft

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node {
    echo 'Results included as an inline comment exactly how they are returned as of Jenkins 2.121, with $BUILD_NUMBER = 1'
    echo 'No quotes, pipeline command in single quotes'
    sh 'echo $BUILD_NUMBER' // 1
    echo 'Double quotes are silently dropped'
    sh 'echo "$BUILD_NUMBER"' // 1
    echo 'Even escaped with a single backslash they are dropped'
    sh 'echo \"$BUILD_NUMBER\"' // 1
    echo 'Using two backslashes, the quotes are preserved'
    sh 'echo \\"$BUILD_NUMBER\\"' // "1"

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#!/usr/bin/env bash

set -o nounset -o errexit -o pipefail

usage() {
    cat <<EOM
    Usage:
      $(basename $0) [OPTIONS]
      $(basename $0) [ -j | --jenkins-url | -n | --node-name | -s | -d | --desc | --slave-home | -e | --executors | -sh | --ssh-host | -sp | --ssh-port
                              | -c | --cred-id | -l | --labels | -u | --user-id | -p | --password | -h | --help ]

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#include <stdio.h>

void DumpHex(const void* data, size_t size) {
	char ascii[17];
	size_t i, j;
	ascii[16] = '\0';
	for (i = 0; i < size; ++i) {
		printf("%02X ", ((unsigned char*)data)[i]);
		if (((unsigned char*)data)[i] >= ' ' && ((unsigned char*)data)[i] <= '~') {
			ascii[i % 16] = ((unsigned char*)data)[i];

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/* 
    This code should be pasted within the files where this function is needed.
    This function will not create any code conflicts.
    
    The function call is similar to printf: ardprintf("Test %d %s", 25, "string");

    To print the '%' character, use '%%'

    This code was first posted on http://arduino.stackexchange.com/a/201
*/