Final answer:
To get an AWS Access Key ID for the CLI, sign in to the AWS console, access the IAM dashboard, create or select an IAM user, attach necessary permissions, and under the 'Security Credentials' tab, create or access an existing Access Key ID. Always store the keys securely.
Step-by-step explanation:
To obtain an AWS Access Key ID for use with the AWS Command Line Interface (CLI), you would typically follow these steps: Sign in to the AWS Management Console. Navigate to the Identity and Access Management (IAM) dashboard. Create a new IAM user or select an existing user. Attach the appropriate permissions to the user, which allow them to perform the tasks you require via the CLI. Go to the Security Credentials tab for the user.
Under the Access Keys section, click on Create New Access Key or use an existing key if it's already created. Download the Access Key ID and Secret Access Key or copy them to a secure location. Make sure to store the keys in a secure place, as the access keys allow anyone in possession of them to access your AWS resources within the scope of the permissions granted to the IAM user. The AWS CLI will require both the Access Key ID and the Secret Access Key to authenticate your CLI commands.