Published on March 15, 2017 by Docker
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Docker Captain Bret Fisher explains on of his favorite Docker tips: The new docker system prune and docker system df commands.

Docker is an open platform for developers and system administrators to build, ship and run distributed applications. With Docker, IT organizations shrink application delivery from months to minutes, frictionlessly move workloads between data centers and the cloud and can achieve up to 20X greater efficiency in their use of computing resources. Inspired by an active community and by transparent, open source innovation, Docker containers have been downloaded more than 700 million times and Docker is used by millions of developers across thousands of the world’s most innovative organizations, including eBay, Baidu, the BBC, Goldman Sachs, Groupon, ING, Yelp, and Spotify. Docker’s rapid adoption has catalyzed an active ecosystem, resulting in more than 180,000 “Dockerized” applications, over 40 Docker-related startups and integration partnerships with AWS, Cloud Foundry, Google, IBM, Microsoft, OpenStack, Rackspace, Red Hat and VMware.

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5 Comments on "Docker tip: docker system prune and df"

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Pedro Diogo
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Pedro Diogo
7 months 30 days ago

Did you actually run these on docker for mac? Just suspicious because of this old bug: github.com/docker/for-mac/issues/371

Bret Fisher
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Bret Fisher
7 months 29 days ago

Yes this is on macOS, so correct, the qcow2 file doesn't shrink. I also don't think the .vhdx on Windows 10 shrinks either. Didn't have enough time in 3min to explain all that :). This is still valuable though on those platforms as it'll keep the VM from getting even bigger.

Joel Bondurant
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Joel Bondurant
8 months 6 days ago

My favorite Docker cleanup tip: > sudo rm -rf /var/lib/docker

Dharma Jannyter
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Dharma Jannyter
7 months 22 days ago

Some people just want to watch the world burn.

Drifter
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Drifter
8 months 6 days ago

Nice quick way, thnx for this tip.

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