If you want a "dumb" copy that overwrites everything regardless of whether the file already exists locally, use the cp (copy) command.
No. Both sync and cp are read-only operations for the source. Your files remain safe in the cloud. What if I have a huge bucket?
If the bucket belongs to another account, you may need to add the --profile flag or ensure your IAM user has s3:ListBucket and s3:GetObject permissions. aws cli download all files from s3 bucket
For buckets with millions of files, consider using the --dryrun flag first. This shows you exactly what would happen without actually transferring data: aws s3 sync s3://your-bucket-name . --dryrun How do I handle permissions?
The AWS Command Line Interface (CLI) is the most efficient tool for managing cloud storage. If you need to pull an entire dataset from the cloud to your local machine, the aws s3 sync and aws s3 cp commands are your best friends. If you want a "dumb" copy that overwrites
aws s3 sync s3://your-bucket-name . --exclude "*" --include "*.pdf"
Sometimes you don't want the whole bucket—just specific file types. You can use --exclude and --include flags to refine your download. Your files remain safe in the cloud
💡 Always double-check your local storage space before starting a massive download to avoid "Disk Full" errors halfway through the process. To help you get the exact command you need: Are you downloading from a private bucket or a public one ? Do you need to filter by date or file size? Are you running this on Windows, Mac, or Linux ?