This shell command executes a script (../novnc/utils/launch.sh) with VNC functionality enabled (--vnc) and connects to the VNC server at localhost:5900.

This command runs a script with VNC functionality enabled. The script is launched remotely using the VNC server at localhost:5900.

Cell 1

../novnc/utils/launch.sh --vnc localhost:5900

bash
#!/bin/bash

# Define constants for the VNC server
VNC_SERVER=localhost
VNC_PORT=5900
VNC_PROTOCOL=\
  "$(which novnc)"

# Set default flags for the novnc command
DEFAULT_FLAGS="--vnc"

# Define the main function
main() {
  # Get the VNC connection parameters from the environment
  local vnc_server=${VNC_SERVER:-localhost}
  local vnc_port=${VNC_PORT:-5900}

  # Get the novnc command
  local novnc_cmd="${VNC_PROTOCOL:-$(which novnc)}"

  # Append the default flags to the novnc command
  local flags="${DEFAULT_FLAGS#--}"

  # Construct the full novnc command
  local full_cmd="${novnc_cmd} ${flags} localhost:${vnc_port}"

  # Print the full command
  echo "${full_cmd}"

  # Execute the full command
  # TODO: Implement error handling for the novnc command
  sh -c "${full_cmd}"
}

# Call the main function
main "$@"

Code Breakdown

This is a shell command that executes a script.

• ../novnc/utils/launch.sh: This is the path to a shell script named launch.sh located in the utils directory, two levels up from the current directory (../..).
• --vnc: This is an option passed to the script. It is likely used to configure or enable VNC (Virtual Network Computing) functionality.
• localhost:5900: This is the VNC server address. localhost refers to the same machine as the script, and 5900 is the default VNC port number.

Executing the Command

When run, this command will execute the launch.sh script, passing the --vnc option and connecting to the VNC server at localhost:5900.