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docker-machine/docs/reference/active.md
Mary Anthony 39806c02e0 First stage of splitting out
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Signed-off-by: Mary Anthony <mary@docker.com>
2015-07-14 12:44:56 -07:00

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<!--[metadata]>
+++
title = "active"
description = "Identify active machines"
keywords = ["machine, active, subcommand"]
[menu.main]
parent="smn_machine_subcmds"
+++
<![end-metadata]-->
# active
See which machine is "active" (a machine is considered active if the
`DOCKER_HOST` environment variable points to it).
```
$ docker-machine ls
NAME ACTIVE DRIVER STATE URL
dev virtualbox Running tcp://192.168.99.103:2376
staging * digitalocean Running tcp://104.236.50.118:2376
$ echo $DOCKER_HOST
tcp://104.236.50.118:2376
$ docker-machine active
staging
```