http://www.jeffersoncheng.com/Anonymous-Animals Base on https://gist.github.com/rockwotj/6a356a95732985b09e2b

gistfile1.txt

@Grab(group='commons-io', module='commons-io', version='2.4')
import org.apache.commons.io.FilenameUtils

def icons = ['alligator', 'anteater', 'armadillo', 'auroch', 'axolotl', 'badger', 'bat', 'bear', 'beaver', 'buffalo', 'camel', 'capybara', 'chameleon', 'cheetah', 'chinchilla', 'chipmunk', 'chupacabra', 'cormorant', 'coyote', 'crow', 'dingo', 'dinosaur', 'dog', 'dolphin', 'duck', 'elephant', 'ferret', 'fox', 'frog', 'giraffe', 'gopher', 'grizzly', 'hedgehog', 'hippo', 'hyena', 'ibex', 'ifrit', 'iguana', 'jackal', 'kangaroo', 'koala', 'kraken', 'lemur', 'leopard', 'liger', 'lion', 'llama', 'slow loris', 'manatee', 'mink', 'monkey', 'moose', 'narwhal', 'nyan cat', 'orangutan', 'otter', 'panda', 'penguin', 'platypus', 'pumpkin', 'python', 'quagga', 'rabbit', 'raccoon', 'rhino', 'sheep', 'shrew', 'skunk', 'squirrel', 'tiger', 'turtle', 'walrus', 'wolf', 'wolverine', 'wombat']

def url = 'https://ssl.gstatic.com/docs/common/profile/$$_lg.png'

def urls = icons.collect{
    url.replace('$$',it.replace(' ','')).toURL()
}

urls.each{
    def filename = FilenameUtils.getName(it.file)
    def file = new File(filename)

    if(!file.exists()){
        file.createNewFile()
    }else{
        return
    }
    try{
        file.withOutputStream{ fileoutput ->
            it.withInputStream{ urlinput ->
                fileoutput << urlinput
            }
        }
    }catch(e){
        println "$filename failed"
        return
    }
    println "finished $filename"
}