Git hooks are custom scripts that Git executes before or after certain events, such as committing, pushing, or receiving changes. These hooks can be used to automate various tasks, enforce coding standards, and improve the overall development workflow on the IBM i Power System.
In this lesson, you will learn how to set up and use Git hooks on the IBM i Power System to enhance your Git-based development process.
Understanding Git Hooks
Git hooks are located in the .git/hooks directory of your Git repository. When a specific event occurs, Git will automatically execute the corresponding hook script.
Some common Git hooks include:
pre-commit: Runs before a commit is created.commit-msg: Runs after the commit message has been created.pre-push: Runs before changes are pushed to a remote repository.post-receive: Runs on the remote repository after a push has been received.By creating and customizing these hooks, you can automate various tasks, such as:
Setting Up Git Hooks on the IBM i Power System
To set up Git hooks on the IBM i Power System, follow these steps:To set up Git hooks on the IBM i Power System, follow these steps:
.git/hooks directory, you will find several sample hook scripts. These are the default hooks provided by Git..git/hooks directory with the name of the hook you want to use (e.g., pre-commit, pre-push, etc.).Example: Pre-Commit Hook
Let's create a simple pre-commit hook that checks for the presence of a specific keyword in the commit message.
- Create a new file named
pre-commitin the.git/hooksdirectory. - Add the following content to the file:
# Check for the presence of the keyword "WIP" in the commit message
if grep -q "WIP" "$1"; then
echo "Commit message contains the 'WIP' keyword. Please remove it before committing."
exit 1
fi
exit 0
- Make the script executable:
Now, whenever you try to commit changes, the pre-commit hook will check the commit message for the "WIP" keyword. If it's found, the commit will be rejected, and you'll be prompted to remove the keyword.
Customizing Git Hooks
You can customize the Git hooks to suit your specific needs on the IBM i Power System. For example, you could:
The possibilities are endless, and the hooks can be written in any scripting language supported on the IBM i Power System, such as Bash, Python, or REXX.
Best Practices
When using Git hooks on the IBM i Power System, consider the following best practices:
- Keep your hook scripts simple and focused on a specific task.
- Test your hook scripts thoroughly before committing them to the repository.
- Communicate with your team about the purpose and behavior of the hooks.
- Avoid including sensitive information or credentials in the hook scripts.
- Regularly review and update your hook scripts to ensure they remain relevant and effective.
By following these best practices, you can effectively leverage Git hooks to streamline your development workflow and improve the overall quality of your IBM i applications on the Power System.