This article covers an overview of the s3cmd command-line tool and how you can use it to manage your Amazon S3 storage feature. S3cmd is an Open Source tool that is free for both commercial and private use, but you need to pay only for Amazon resources. so most of the users are using this tool for managing AWS S3 Buckets. S3cmd is a free command-line tool written in PythonHow to use the s3cmd command line to manage the Amazon s3 bucket in Linux ?To use s3cmd command to list s3 bucket, run the command:# s3cmd lsThis command will list s3bucket from Amazon S3, If you are unable to get the list of the bucket then there will be the following reasons:There is no bucket created in Amazon s3.As you have used IAM user Access Key and Secret Key while configuring the s3cmd tool, please verify IAM user has required permission to access the s3 bucket.If you are using an IAM role then check whether the s3 bucket policy is attached to the EC2 instance or not.