AWS CLI tools to get a list of lambda layers

aws_layers.sh

#!/usr/bin/env sh

# Need to have the aws cli tool and jq 
#  aws cli: https://docs.aws.amazon.com/cli/latest/userguide/
#  jq: https://stedolan.github.io/jq/

AWS_CLI='/usr/local/bin/aws'
JQ_LOC='/usr/local/bin/jq'

usage() {
    echo "Usage: $0 aws_account" 1>&2
}

AWS_ACCOUNT='default'

if [[ $1 ]]; then
    AWS_ACCOUNT=$1
fi

if [[ -x $JQ_LOC && -x $AWS_CLI ]]; then
    echo Lambda layers installed in $AWS_ACCOUNT 
    $AWS_CLI --profile=$AWS_ACCOUNT lambda list-layers | $JQ_LOC  \
    '[.Layers[] | { 
        layer: .LayerName, 
        arn: .LatestMatchingVersion.LayerVersionArn, 
        release: .LatestMatchingVersion.Description 
    }]'
else
    usage
    exit 1
fi

exit 0