How to list buckets only from a certain region using the CLI?

My previous response was a fast question, the negative vote was unexpected. Based on what you mentioned before to another answer I was able to create a Powershell script that I hope could be useful in your case. Assuming you define a variable name region

Set-Variable -name region -Value "us-west-2"

Running the following script should give you the bucket names

 aws s3api list-buckets --output json |  jq .Buckets[].Name | 
 foreach-object { 
    Set-Variable -name bname -value $_
    aws s3api get-bucket-location --bucket $_  
    } | 
 foreach-object{ if($region -eq $_) { Write-Output $bName } } 

Take care and stay safe, Best regards,

Igvir

Not possible with aws "aws s3 ls" or "aws s3api list-buckets"

Here is a bash answer to this question. you need to use aws s3api get-bucket-location --bucket xxxxx to get the region as documented here.

for bucket in $(aws s3api list-buckets | jq '.Buckets | .[].Name' | sed 's/"//g' ) ; do
  location=$(aws s3api get-bucket-location --bucket $bucket | jq '.LocationConstraint' | sed 's/null/us-east-1/g' | sed 's/"//g')
  echo $bucket $location
done

Hello According to the AWS Command Line Interface reference, you have the option to use global parameters.

Did you try global parameter --region?

aws s3api list-buckets --region "us-east-2"