# Docker: 'system' is not a docker command. Unable to run ./launcher cleanup

**URL:** <https://meta.discourse.org/t/docker-system-is-not-a-docker-command-unable-to-run-launcher-cleanup/65783>\
**Category:** Self-hosting\
**Created:** [July 7, 2017, 4:41am UTC](https://meta.discourse.org/t/docker-system-is-not-a-docker-command-unable-to-run-launcher-cleanup/65783 "2017-07-07T04:41:39Z")\
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**Author:** ![SMT](https://avatars.discourse-cdn.com/v4/letter/s/dec6dc/32.png) [@SMT](https://meta.discourse.org/u/SMT)\
**Post date:** [July 7, 2017, 4:41am UTC](https://meta.discourse.org/t/docker-system-is-not-a-docker-command-unable-to-run-launcher-cleanup/65783/1 "2017-07-07T04:41:39Z")

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./launcher cleanup  
flag provided but not defined: --format  
See ‘/usr/bin/docker info --help’.  
You have less than 5GB of free space on the disk. You will need more space to continue

Would you like to attempt to recover space by cleaning docker images and containers in the system?(y/N)y  
docker: ‘system’ is not a docker command.  
See ‘docker --help’.

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