This code prepares a directory and generates a VNC entry point script for a Jupyter/Angular project using an npm script.

Run example

npm run import -- "install vnc entry"

install vnc entry

cd ~/jupytangular \
   && mkdir /opt/bin || true \
   && npm run output "vnc entry point" "/opt/bin/entry_point.sh" \
   && chmod +x /opt/bin/entry_point.sh

#!/bin/bash

# Change directory to ~/jupytangular and set as working directory
set -e  # Exit immediately if a command returns a non-zero status
cd ~/jupytangular || exit 1  # Use exit 1 to terminate the script with a non-zero status

# Create /opt/bin directory and set permissions
mkdir -p /opt/bin || true
chmod 0755 /opt/bin || exit 1

# Run npm command to generate entry point script
npm run output \
  "vnc entry point" \
  "/opt/bin/entry_point.sh"

# Set executable permissions on the generated script
chmod +x /opt/bin/entry_point.sh

This code snippet sets up a directory structure and builds a VNC entry point script for a Jupyter/Angular project. Here's a breakdown:

1. cd ~/jupytangular: Changes the current working directory to the jupytangular directory located in the user's home directory.

2. && mkdir /opt/bin || true: Creates a directory /opt/bin if it doesn't already exist. The || true part ensures that the command continues even if the directory creation fails (which might happen if the directory already exists).

3. npm run output "vnc entry point" "/opt/bin/entry_point.sh": Executes an npm script named "output" with the arguments "vnc entry point" and "/opt/bin/entry_point.sh". This likely builds or generates a script named entry_point.sh and places it in the /opt/bin directory.

4. chmod +x /opt/bin/entry_point.sh: Makes the entry_point.sh script executable.

In essence, this code prepares a directory for a VNC entry point script and generates the script itself using an npm script. The entry_point.sh script likely contains the commands to start the VNC server and other necessary configurations.