How to grep into files stored in S3

Question

Do anybody know how to perform grep on S3 files with aws S3 directly into the bucket? For example I have FILE1.csv, FILE2.csv with many rows and want to look for the rows that

Answer 1

The aws s3 cp command can send output to stdout:

aws s3 cp s3://mybucket/foo.csv - | grep 'JZZ'

The dash (-) signals the command to send output to stdout.

See: How to use AWS S3 CLI to dump files to stdout in BASH?