@echo off
start http://www.talstra.net
start http://pathwaystopipelines.com
start http://learners.net
start http://legionsandrealms.com

@echo off
setlocal

REM Check if Unity 2022.2.18 is already installed
if not exist “C:\Program Files\Unity\Hub\Editor\2022.3.8f1\Editor\Unity.exe” (
echo Unity 2022.2.18 is not installed. Downloading…

REM Download Unity 2022.2.18 installer using curl
curl -o "UnityInstaller.exe" "https://download.unity3d.com/download_unity/5ebc6493a86f/Windows64EditorInstaller/UnitySetup64-2022.2.18f1.exe"

REM Run the installer (modify the path as needed)
start /wait UnityInstaller.exe /S

REM Clean up the installer
del UnityInstaller.exe
) else (
echo Unity 2022.2.18 is already installed.
)

REM Uninstall Unity Hub
“C:\Program Files\Unity Hub\Uninstall Unity Hub.exe” /S

REM Create MyUnityProject folder
mkdir “%USERPROFILE%\Documents\MyUnityProject”

REM Run Unity Editor
“C:\Program Files\Unity\Hub\Editor\2022.3.8f1\Editor\Unity.exe”

endlocal

@echo off: This command turns off the echoing of commands in the command prompt window. It ensures that only the output of the commands is displayed, making the execution cleaner.

• setlocal: This command starts localization of environment changes in the batch file. It ensures that any changes made to the environment variables are local to the batch file and won’t affect the rest of the system after the batch file execution completes.

Explanation:

Let’s break down the provided batch script line by line:

batchCopy code@echo off
setlocal

• @echo off: This command turns off the echoing of commands in the command prompt window. It ensures that only the output of the commands is displayed, making the execution cleaner.
• setlocal: This command starts localization of environment changes in the batch file. It ensures that any changes made to the environment variables are local to the batch file and won’t affect the rest of the system after the batch file execution completes.

REM: This is a remark or comment in the script, used for documentation purposes. It’s not executed as a command.

• @echo off: This command turns off the echoing of commands in the command prompt window. It ensures that only the output of the commands is displayed, making the execution cleaner.
• setlocal: This command starts localization of environment changes in the batch file. It ensures that any changes made to the environment variables are local to the batch file and won’t affect the rest of the system after the batch file execution completes.
• if not exist "C:\Program Files\Unity\Hub\Editor\2022.3.8f1\Editor\Unity.exe": This checks if Unity 2022.2.18 is not installed by verifying the existence of the Unity executable file. If it’s not found, the subsequent commands within the parentheses are executed.
• echo Unity 2022.2.18 is not installed. Downloading…: This displays a message indicating that Unity 2022.2.18 is not installed, and the downloading process is initiated.
• curl -o "UnityInstaller.exe" "https://download.unity3d.com/download_unity/5ebc6493a86f/Windows64EditorInstaller/UnitySetup64-2022.2.18f1.exe": This command downloads the Unity 2022.2.18 installer using the curl utility.
• start /wait UnityInstaller.exe /S: This command starts the UnityInstaller.exe with the /S switch, which installs Unity silently without user interaction. The /wait flag ensures that the script waits for the installer process to finish before proceeding.
• del UnityInstaller.exe: This command deletes the UnityInstaller.exe file after the installation is complete.
• else: If Unity 2022.2.18 is already installed, the script executes the commands within the parentheses.
• echo Unity 2022.2.18 is already installed.: This displays a message indicating that Unity 2022.2.18 is already installed.

Practical Application:

This batch script automates several tasks related to managing Unity installations and projects:

1. It checks if Unity 2022.2.18 is installed and installs it if not.
2. It uninstalls Unity Hub.
3. It creates a folder named “MyUnityProject” in the user’s Documents directory.
4. It runs the Unity Editor.

You can save this script in a .bat file and run it to automate the setup process for Unity development. Just ensure to modify the paths and version numbers as needed for your environment.

Explanation:

The command you provided is a line of code written in a scripting language called Batch Script or .bat file. Let’s break it down:

“C:\Program Files\Unity Hub\Uninstall Unity Hub.exe” /S

• ": These quotation marks are used to indicate the beginning and end of the file path. They’re necessary because the path contains spaces, and without them, the command prompt might interpret each word separately.
• C:\Program Files\Unity Hub\Uninstall Unity Hub.exe: This is the path to the executable file (Uninstall Unity Hub.exe) of Unity Hub located on your computer. The path specifies the exact location of the file on your system.
• /S: This is a command-line switch or parameter. In this case, /S is used to run the uninstallation silently, meaning it will remove Unity Hub without displaying any prompts or windows. It’s handy for automated or unattended uninstallations.

Practical Application:

If you want to uninstall Unity Hub from your computer without any interaction, you can use this command in a Command Prompt or a batch script (.bat file). Here’s how you can do it:

1. Open Notepad or any text editor.
2. Paste the command @"C:\Program Files\Unity Hub\Uninstall Unity Hub.exe" /S into the text editor.
3. Save the file with a .bat extension, for example, uninstall_unity_hub.bat.
4. Double-click the newly created .bat file to execute the command. Alternatively, you can open Command Prompt, navigate to the directory where the .bat file is located, and then type the filename followed by Enter.

This command will silently uninstall Unity Hub from your computer, making the process quick and convenient, especially if you’re managing multiple installations or automating tasks. Remember to be cautious when running commands like these, as they can have irreversible effects on your system. Always ensure you understand what the command does before executing it.

Batch scripts are kept in plain text files that have lines with sequential commands that are run one after the other. One method to lessen this requirement and increase productivity at the shell is by scripting, which automates these command sequences. With pertinent examples provided for ease of understanding, this course covers the fundamental features of Batch Script.