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  1. The CFDDFC command line interface (CLI)
  2. Install the CFDDFC CLI
  3. Configure the CFDDFC CLI
  4. Launch an Instance
  5. Run on an Instance
  6. Terminate an Instance

Overview of the CFDDFC CLI

The CFDDFC CLI is a collection of shell (/bin/sh) scripts contained in a directory named cfddfc-cli.  The directory includes a main cfddfc script and bin and lib directories containing scripts that are executed and sourced, respectively, from the main script.  The cfddfc-cli directory can be installed anywhere on the Linux system.  With root privileges, it can be installed in system-wide location available to all users; without root privileges, it can be installed by a single user somewhere within in their home directory.  We recommend one of the following locations:

  • /usr/local – system-wide location requiring root privileges;
  • $HOME/bin  – single user location without root privileges.

Option 1: System-Wide Installation

For a system-wide installation, you need root privileges; if your user is part of the admin group, then you can gain root-level access using sudo. Go to the /usr/local directory and download and unpack the cfddfc scripts directory:

sudo sh -c "(cd /usr/local && curl | tar xvz --no-same-owner)"

Create a soft link to the main script in /usr/local/bin, which is generally on all users’ search PATH:

sudo ln -s /usr/local/cfddfc-cli/cfddfc /usr/local/bin/cfddfc

Option 2: Single User Installation

The $HOME/bin directory must first exist to install in that directory.  Create the bin directory if it does not exist with:

mkdir $HOME/bin

Go into the bin directory and download and unpack the cfddfc-cli script directory:

cd $HOME/bin
curl | tar xvz

The user should finally enable the system to find the main cfddfc script.  Two ways to do this are described below, choose one of them.

EITHER add $HOME/bin/cfddf-cli to the user’s PATH by editing their default shell configuration file, e.g. $HOME/.bashrc and adding the following line at the end of the file:


OR, if $HOME/bin is already on the PATH (check with “echo $PATH”), create a soft link in that directory to the main script, i.e.:

ln -s ${HOME}/bin/cfddfc-cli/cfddfc ${HOME}/bin/cfddfc

Test the Installation

The installation can be tested by typing in the terminal:

cfddfc help

which should bring up some help text, that begins with:

Command line tool for launching CFD Direct From the Cloud (CFDDFC) on Amazon Web
Services (AWS):

Next Step : Configure the CFDDFC CLI

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