Set retention policies for AWS CloudWatch Log Groups, for a profile and a region

set-retention.sh

#!/bin/bash
# Example - to set the logs retention policy for your default AWS account in region eu-west-1 to 5 days, execute the command:
# set-retention.sh default eu-west-1 5
export AWS_PROFILE=$1
export AWS_REGION=$2
RETENTION_DAYS=${3:-30}
echo "AWS_PROFILE=$AWS_PROFILE, AWS_REGION=$AWS_REGION, RETENTION_DAYS=$RETENTION_DAYS"
while read -r i; 
    do (aws logs put-retention-policy --region "$AWS_REGION" --log-group-name "$i" --retention-in-days "$RETENTION_DAYS" );
done < <(aws logs describe-log-groups --region "$AWS_REGION" --query 'logGroups[*].[logGroupName]' | grep / | sed 's/"//g')