xargs issue with docker-volume-cleanup

[yurinnick]

Command sudo docker-volume-cleanup -f in boot2docker returns

xargs: invalid option -- 'a'
BusyBox v1.22.1 (2014-04-04 15:16:09 UTC) multi-call binary.

Usage: xargs [OPTIONS] [PROG ARGS]
...

[yurinnick]

For now workaround for removing all orphaned volumes in boot2docker

boo2docker ssh
docker@boot2docker:~$ sudo rm -rf $(sudo docker-volume-cleanup | grep /var/lib/docker/vfs/dir/)