DevOps · Infrastructure as Code (IaC) · Git Series – Part 10
Even experienced developers and DevOps engineers don’t remember every Git command — and they don’t need to. Git provides excellent built-in help, documentation, examples, and command explainers right inside the CLI.

In this chapter, you’ll learn how to:

• Get help for any Git command
• View full documentation (man pages)
• Use built-in examples
• Explore subcommands deeply
• Find config options and advanced flags
• Discover commands you didn’t know existed
• Diagnose errors and understand Git output

This chapter makes you fully self-sufficient in using Git.

1. Git Help Basics

The primary help command:

git help

This shows general usage and available commands grouped by purpose:

• Main commands
• Ancillary commands
• Internal commands
• Guides (aka “Concept Guides”)

2. Get Help for Any Command

The 3 ways to ask Git for help:

1. Using git help <command>

git help commit
git help log
git help merge

Opens the man page or HTML help (depending on your system).

2. Using manual pages directly

man git-commit
man git-log

3. Using --help

git commit --help
git branch --help

All three methods show the same content.

3. Short Usage Summary

Instead of full documentation:

git commit -h
git pull -h
git push -h
git checkout -h

This prints a quick, concise usage guide — extremely handy.

4. Explore Command Examples (Built-In!)

Many Git commands include practical examples at the end of their help pages.

Scroll to the bottom and look for:

EXAMPLES

For example:

git help log

Scroll down → you’ll see dozens of useful log examples.

These examples cover:

• filtering commits
• showing graphs
• formatting messages
• searching history
• limiting output

This is one of Git’s strongest built-in features.

5. Git Guides (Must-Read Built-In Documentation)

Git includes excellent conceptual guides:

git help glossary
git help revisions
git help everyday
git help workflows
git help tutorial
git help tutorial-2
git help worktree

Recommended for DevOps Engineers:

• git help revisions → explains commit ranges, hashes, HEAD~1, HEAD^, branch1..branch2, etc.
• git help glossary → every Git term explained
• git help workflows → team workflows
• git help everyday → practical commands for daily use
• git help worktree → using multiple worktrees (amazing for IaC work)

6. Explore Available Commands

List all Git commands:

git help -a

Shows:

• porcelain commands
• plumbing commands
• experimental commands
• internal tools

List guides and documentation:

git help -g

7. View Config Options for Any Area

To see all Git configuration entries:

git help config

Example: see available merge strategies:

git help merge

Example: show all commit options:

git help commit

This is how you become proficient with Git internals.

8. Search Git Documentation

If you don’t know the exact command:

git help -a | grep stash
git help -a | grep rebase

Or use shell search:

apropos git

9. Diagnosing Errors With git help

Git error messages often mention:

See 'git <command> --help' for more information.

Examples:

Merge conflict:

error: Merging is not possible because you have unmerged files.
See 'git merge --help'

Fix:

git merge --help

You’ll find sections describing:

• what causes conflicts
• how to resolve
• merge strategies

10. Understanding Command Groups

Git help pages classify commands into groups:

Main commands

Daily operations:

• clone
• commit
• push
• pull
• merge
• status

Ancillary commands

Less frequent:

• bisect
• tag
• rebase
• revert
• branch

Plumbing commands (advanced)

Underlying low-level tools:

• update-index
• hash-object
• cat-file
• fsck

DevOps teams rarely need these, but they are great for deep learning.

11. HTML Documentation

Git can open documentation in the browser:

git help -w log
git help -w commit

The -w flag forces a web browser help viewer.

12. Example: Exploring an Unknown Command

Suppose you see git worktree in an article — and don’t know it.

Just run:

git help worktree

You get:

• Concept explanation
• Examples
• Options
• Workflows

This is the fastest way to learn new commands.

13. Example: Learning Commit Ranges

Want to understand HEAD~3 or main..develop?

Run:

git help revisions

This is the official & complete explanation.

14. Example: Learn Basic Git Concepts

git help tutorial
git help tutorial-2
git help everyday

It’s surprising how many professionals never read these.

15. Summary – Git Help Commands

16. Why Git Help Matters in DevOps

Git is central to DevOps workflows:

• CI/CD triggers
• IaC versioning
• PR reviews
• Rollbacks
• Deployment tagging
• Artifact tracking

Being able to quickly reference documentation speeds up troubleshooting and reduces mistakes.

17. What’s Next?

You now know how to:

✔ Explore any Git command
✔ Understand man pages
✔ Read guides & examples
✔ Diagnose errors
✔ Learn Git on your own from the CLI

The next chapter:

➡️ Part 11 – Git Branch: Creating, Switching, Managing & Understanding Branches
You’ll learn branching models, how branches work internally, branch pointers, fast-forwards, detached HEAD, feature branches, DevOps workflow patterns, and more.