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README.md

This file is part of eRCaGuy_hello_world: https://github.com/ElectricRCAircraftGuy/eRCaGuy_hello_world

Notes

  1. "DBUS" or "D-bus" = Desktop Bus
    1. https://en.wikipedia.org/wiki/D-Bus
  2. "sdbus" or "sd-bus" = systemd implementation of D-bus
  3. "IPC" = Inter-Process Communication mechanism
  4. "IIO" = Industrial Input/Output
  5. systemd-by-example is a sub-repo (git submodule).
    1. See the main readme under the section titled "How to clone this repo and all git submodules".

To generate the PDF book in the systemd-by-example dir

sudo apt update
sudo apt install pandoc
pip3 install MarkdownPP
sudo apt install texlive-xetex

cd path/to/here
cd systemd-by-example
./make_book.sh
# You'll now have "book.pdf" inside directory "systemd-by-example"!

References:

  1. https://github.com/jreese/markdown-pp - instructions to install MarkdownPP
  2. https://tex.stackexchange.com/a/179811/168682 - instructions to install texlive-xetex
  3. My answer where I added the above info: Stack Overflow: pandoc: xelatex not found. xelatex is needed for pdf output

I originally found the systemd-by-example repo by Frank Krick by doing a Google search for "sdbus example in c". It was a few links down.

systemd folder

The systemd folder here is a symlink to the systemd repo which you must store at the same file level as the eRCaGuy_hello_world repo itself. This is in lieu of adding systemd as a "git submodule", because, quite frankly, "git submodules" are a pain and should only be used when you are actively developing the main repo and the sub-repos. I'm not actively developing systemd--I just want it as a reference is all. So, let's symlink it!

To actually populate the systemd pointed-to dir, do this:

cd path/to/eRCaGuy_hello_world
# go up one level to be at the same level as the eRCaGuy_hello_world repo
cd .. 
git clone https://github.com/systemd/systemd.git

That's it!

Here is the systemd repo: https://github.com/systemd/systemd