Terraform fmt for formatting - Step-by-Step Execution

Process Flow - Terraform fmt for formatting

Write Terraform code

↓

Run 'terraform fmt'

↓

Terraform scans files

↓

Detect formatting issues?

No→Exit, files unchanged

Yes↓

Rewrite files with standard format

↓

Exit, files formatted

Terraform fmt checks your code files and rewrites them to follow standard formatting rules, making your code neat and consistent.

Execution Sample

Terraform

terraform fmt

Runs the formatter on Terraform files in the current directory to fix indentation and spacing.

Process Table

Step	Action	Files Checked	Formatting Issues Found	Files Changed
1	Start terraform fmt	main.tf, variables.tf	No	No
2	Check main.tf	main.tf	Yes	Yes
3	Rewrite main.tf with standard format	main.tf	N/A	Yes
4	Check variables.tf	variables.tf	No	No
5	Finish formatting	main.tf, variables.tf	N/A	Yes

💡 All files checked; main.tf reformatted; variables.tf unchanged.

Status Tracker

Variable	Start	After Step 2	After Step 3	Final
main.tf content	Unformatted code	Unformatted code	Formatted code	Formatted code
variables.tf content	Formatted code	Formatted code	Formatted code	Formatted code

Key Moments - 2 Insights

Why does terraform fmt sometimes not change any files?

If the files are already formatted correctly, terraform fmt finds no issues and leaves them unchanged, as shown in step 1 and 4 of the execution table.

Does terraform fmt change the code logic or only formatting?

Terraform fmt only changes spacing and indentation, not the code logic or content, as seen in the variable_tracker where content changes only reflect formatting.

Visual Quiz - 3 Questions

Look at the execution table, at which step does terraform fmt rewrite a file?

A Step 2

B Step 3

C Step 4

D Step 5

💡 Hint

Check the 'Action' and 'Files Changed' columns in the execution table.

According to the variable tracker, what is the state of variables.tf after formatting?

A Deleted file

B Unformatted code

C Formatted code

D Partially formatted code

💡 Hint

Look at the 'variables.tf content' row in the variable_tracker after final step.

If main.tf was already formatted, how would the execution table change?

A Step 3 would be skipped with no files changed

B Step 2 would show formatting issues found

C Step 4 would rewrite variables.tf

D Step 5 would show files deleted

💡 Hint

Refer to the 'Formatting Issues Found' and 'Files Changed' columns in the execution table.

Concept Snapshot

terraform fmt
- Command to format Terraform files
- Fixes indentation and spacing
- Does not change code logic
- Runs in current directory by default
- Keeps code neat and consistent

Full Transcript

Terraform fmt is a command that checks your Terraform code files for formatting issues like indentation and spacing. When you run terraform fmt, it scans all Terraform files in the current folder. If it finds files that are not formatted properly, it rewrites them to follow the standard style. If files are already formatted, it leaves them unchanged. This helps keep your code clean and easy to read without changing how it works.