Get your AWS Account ID using AWS CLI

If you have not already done so, install and configure AWS CLI.

Get your AWS Account ID

To get your AWS Account ID, run the following command:

aws sts get-caller-identity --query Account --output text

This command uses the Security Token Service (STS) get-caller-identity function, which returns details about the IAM user or role making the call. The --query Account fetches only the Account ID, and --output text ensures the result is displayed as plain text.

Understanding the output

The output of the get-caller-identity command provides three pieces of information:

• UserId: The unique identifier for the entity making the call. For an IAM user, this is the user's unique ID.
• Account: Your AWS Account ID.
• Arn: The Amazon Resource Name (ARN) of the IAM user or role making the call.

By using the --query Account parameter, we specifically extract the Account value.

Saving the output to file

You can save the output of the get-caller-identity command to a file using the > operator as shown below:

aws sts get-caller-identity --query Account --output text > account-id.txt

This will save the output to a file called account-id.txt in the current directory.