Small shell command to list or remove docker volumes

docker_volumes.sh

#!/usr/bin/env bash

# Get the current docker version
echo "List or remove docker volumes"
echo "This only works for docker version 1.9 or higher"
echo "Docker version:"
docker -v 


# Differentiate remove command for linux and os x
function remove_volumes() {
if [[ "$OSTYPE" == "linux"* ]]; then
    echo "Remove for Linux"
    docker volume ls -qf dangling=true | xargs -r docker volume rm


elif [[ "$OSTYPE" == "darwin"* ]]; then
    echo "Remove for Darwin"
    docker volume ls -qf dangling=true | xargs docker volume rm

fi

}


# Check arg for listing or removing
if [[ "$@" == "-ls"* ]]; then
    echo "Listing Volumes"

    docker volume ls -qf dangling=true #| xargs -r docker volume rm

elif [[ "$@" == "-rm"* ]]; then
    echo "Removing volumes"

    remove_volumes

    echo "Volumes left:"
    docker volume ls -qf dangling=true #| xargs -r docker volume rm
else 
    echo "$@"
    echo "not a valid argument, use -lf or -rm"
fi