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Directory Structure

In both CentOS and Ubuntu, scripts are located on the desktop that enable the user to easily work:

• nos3-build.sh - Build FSW and simulators
• nos3-run.sh - Launch the ground station, FSW, and simulators
• nos3-stop.sh - Safely stop all components

.
├── ~/nos3/
|   ├── /apps
|   ├── /cfe
|   ├── /components
|   ├── /nasa_defs
|   ├── /osal
|   ├── /psp
|   ├── /sims
|   ├── /support
|   |   ├── /VirtualMachine
|   |   ├── /cosmos
|   |   ├── /installers
|   |   ├── /packages
|   |   ├── vagrantfile
|   ├── /tools
|   ├── .gitignore
|   ├── CMakeLists.txt
|   └── README.md

An overview of what each of these does:

File / Directory	Description
~/nos3/	Contains the repository at the time of the build locally in the VM.
/apps	The open source cFS apps.
/cfe	The core flight system (cFS) source files.
/components	Hardware Specific Applications, and Device Driver Libraries for CFS
/nasa_defs	Mission Definition Files, Mission Tables, Build Targets, and Toolchain files
/osal	Operating system abstraction layer (OSAL), enables building for linux and flight OS.
/psp	Platform support package (PSP), enables use on multiple types of boards.
/sims	Software Simulators of Hardware components
/support	All the files needed for ground stations, ION, and installation.
/support/VirtualMachine	Files directly related to the VM, such as desktop scripts and launchers.
/support/cosmos	COSMOS database files.
/support/installers	Installation scripts.
/support/packages	Installation packages.
/support/Vagrantfile	Main provisioner file used to generate the VM.
/tools	Standard cFS provided tools.
.gitignore	List of files and directories to be ommitted from git.
CMakeLists.txt	Top level cmake file to be used from inside the build directory.
README.md	This file.

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