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Add documentation for container, volume, image and system prune subcommands 

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
This commit is contained in:
Kenfe-Mickael Laventure 2016-08-31 09:57:32 -07:00 committed by Tibor Vass
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<!--[metadata]>
+++
title = "container prune"
description = "Remove all stopped containers"
keywords = [container, prune, delete, remove]
[menu.main]
parent = "smn_cli"
+++
<![end-metadata]-->
# container prune
```markdown
Usage: docker container prune
Remove all stopped containers
Options:
-f, --force Do not prompt for confirmation
--help Print usage
```
Example output:
```bash
$ docker container prune
WARNING! This will remove all stopped containers.
Are you sure you want to continue? [y/N] y
Deleted Containers:
4a7f7eebae0f63178aff7eb0aa39cd3f0627a203ab2df258c1a00b456cf20063
f98f9c2aa1eaf727e4ec9c0283bc7d4aa4762fbdba7f26191f26c97f64090360
Total reclaimed space: 212 B
```
## Related information
* [system df](system_df.md)
* [volume prune](container_prune.md)
* [image prune](container_prune.md)
* [system prune](system_prune.md)

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<!--[metadata]>
+++
title = "image prune"
description = "Remove all stopped images"
keywords = [image, prune, delete, remove]
[menu.main]
parent = "smn_cli"
+++
<![end-metadata]-->
# image prune
```markdown
Usage: docker image prune
Remove unused images
Options:
-a, --all Remove all unused images, not just dangling ones
-f, --force Do not prompt for confirmation
--help Print usage
```
Remove all dangling images. If `-a` is specified, will also remove all images not referenced by any container.
Example output:
```bash
$ docker image prune -a
WARNING! This will remove all images without at least one container associated to them.
Are you sure you want to continue? [y/N] y
Deleted Images:
untagged: alpine:latest
untagged: alpine@sha256:3dcdb92d7432d56604d4545cbd324b14e647b313626d99b889d0626de158f73a
deleted: sha256:4e38e38c8ce0b8d9041a9c4fefe786631d1416225e13b0bfe8cfa2321aec4bba
deleted: sha256:4fe15f8d0ae69e169824f25f1d4da3015a48feeeeebb265cd2e328e15c6a869f
untagged: alpine:3.3
untagged: alpine@sha256:4fa633f4feff6a8f02acfc7424efd5cb3e76686ed3218abf4ca0fa4a2a358423
untagged: my-jq:latest
deleted: sha256:ae67841be6d008a374eff7c2a974cde3934ffe9536a7dc7ce589585eddd83aff
deleted: sha256:34f6f1261650bc341eb122313372adc4512b4fceddc2a7ecbb84f0958ce5ad65
deleted: sha256:cf4194e8d8db1cb2d117df33f2c75c0369c3a26d96725efb978cc69e046b87e7
untagged: my-curl:latest
deleted: sha256:b2789dd875bf427de7f9f6ae001940073b3201409b14aba7e5db71f408b8569e
deleted: sha256:96daac0cb203226438989926fc34dd024f365a9a8616b93e168d303cfe4cb5e9
deleted: sha256:5cbd97a14241c9cd83250d6b6fc0649833c4a3e84099b968dd4ba403e609945e
deleted: sha256:a0971c4015c1e898c60bf95781c6730a05b5d8a2ae6827f53837e6c9d38efdec
deleted: sha256:d8359ca3b681cc5396a4e790088441673ed3ce90ebc04de388bfcd31a0716b06
deleted: sha256:83fc9ba8fb70e1da31dfcc3c88d093831dbd4be38b34af998df37e8ac538260c
deleted: sha256:ae7041a4cc625a9c8e6955452f7afe602b401f662671cea3613f08f3d9343b35
deleted: sha256:35e0f43a37755b832f0bbea91a2360b025ee351d7309dae0d9737bc96b6d0809
deleted: sha256:0af941dd29f00e4510195dd00b19671bc591e29d1495630e7e0f7c44c1e6a8c0
deleted: sha256:9fc896fc2013da84f84e45b3096053eb084417b42e6b35ea0cce5a3529705eac
deleted: sha256:47cf20d8c26c46fff71be614d9f54997edacfe8d46d51769706e5aba94b16f2b
deleted: sha256:2c675ee9ed53425e31a13e3390bf3f539bf8637000e4bcfbb85ee03ef4d910a1
Total reclaimed space: 16.43 MB
```
## Related information
* [system df](system_df.md)
* [container prune](container_prune.md)
* [volume prune](container_prune.md)
* [system prune](system_prune.md)

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<!--[metadata]>
+++
title = "system df"
description = "The system df command description and usage"
keywords = [system, data, usage, disk]
[menu.main]
parent = "smn_cli"
+++
<![end-metadata]-->
# system df
```markdown
Usage: docker system df [OPTIONS]
Show docker filesystem usage
Options:
--help Print usage
-v, --verbose Show detailed information on space usage
```
The `docker system df` command displays information regarding the
amount of disk space used by the docker daemon.
By default the command will just show a summary of the data used:
```bash
$ docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 5 2 16.43 MB 11.63 MB (70%)
Containers 2 0 212 B 212 B (100%)
Local Volumes 2 1 36 B 0 B (0%)
```
A more detailed view can be requested using the `-v, --verbose` flag:
```bash
$ docker system df -v
Images space usage:
REPOSITORY TAG IMAGE ID CREATED SIZE SHARED SIZE UNIQUE SIZE CONTAINERS
my-curl latest b2789dd875bf 6 minutes ago 11 MB 11 MB 5 B 0
my-jq latest ae67841be6d0 6 minutes ago 9.623 MB 8.991 MB 632.1 kB 0
<none> <none> a0971c4015c1 6 minutes ago 11 MB 11 MB 0 B 0
alpine latest 4e38e38c8ce0 9 weeks ago 4.799 MB 0 B 4.799 MB 1
alpine 3.3 47cf20d8c26c 9 weeks ago 4.797 MB 4.797 MB 0 B 1
Containers space usage:
CONTAINER ID IMAGE COMMAND LOCAL VOLUMES SIZE CREATED STATUS NAMES
4a7f7eebae0f alpine:latest "sh" 1 0 B 16 minutes ago Exited (0) 5 minutes ago hopeful_yalow
f98f9c2aa1ea alpine:3.3 "sh" 1 212 B 16 minutes ago Exited (0) 48 seconds ago anon-vol
Local Volumes space usage:
NAME LINKS SIZE
07c7bdf3e34ab76d921894c2b834f073721fccfbbcba792aa7648e3a7a664c2e 2 36 B
my-named-vol 0 0 B
```
* `SHARED SIZE` is the amount of space that an image shares with another one (i.e. their common data)
* `UNIQUE SIZE` is the amount of space that is only used by a given image
* `SIZE` is the virtual size of the image, it is the sum of `SHARED SIZE` and `UNIQUE SIZE`
## Related Information
* [system prune](system_prune.md)
* [container prune](container_prune.md)
* [volume prune](volume_prune.md)
* [image prune](image_prune.md)

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<!--[metadata]>
+++
title = "system prune"
description = "Remove unused data"
keywords = [system, prune, delete, remove]
[menu.main]
parent = "smn_cli"
+++
<![end-metadata]-->
# system prune
```markdown
Usage: docker system prune COMMAND
Delete unused data
Options:
-a, --all Remove all unused images not just dangling ones
-f, --force Do not prompt for confirmation
--help Print usage
```
Remove all unused containers, volumes and images (both dangling and unreferenced).
Example output:
```bash
$ docker system prune -a
WARNING! This will remove:
- all stopped containers
- all volumes not used by at least one container
- all images without at least one container associated to them
Are you sure you want to continue? [y/N] y
Deleted Containers:0998aa37185a1a7036b0e12cf1ac1b6442dcfa30a5c9650a42ed5010046f195b
73958bfb884fa81fa4cc6baf61055667e940ea2357b4036acbbe25a60f442a4d
Deleted Volumes:
named-vol
Deleted Images:
untagged: my-curl:latest
deleted: sha256:7d88582121f2a29031d92017754d62a0d1a215c97e8f0106c586546e7404447d
deleted: sha256:dd14a93d83593d4024152f85d7c63f76aaa4e73e228377ba1d130ef5149f4d8b
untagged: alpine:3.3
deleted: sha256:695f3d04125db3266d4ab7bbb3c6b23aa4293923e762aa2562c54f49a28f009f
untagged: alpine:latest
deleted: sha256:ee4603260daafe1a8c2f3b78fd760922918ab2441cbb2853ed5c439e59c52f96
deleted: sha256:9007f5987db353ec398a223bc5a135c5a9601798ba20a1abba537ea2f8ac765f
deleted: sha256:71fa90c8f04769c9721459d5aa0936db640b92c8c91c9b589b54abd412d120ab
deleted: sha256:bb1c3357b3c30ece26e6604aea7d2ec0ace4166ff34c3616701279c22444c0f3
untagged: my-jq:latest
deleted: sha256:6e66d724542af9bc4c4abf4a909791d7260b6d0110d8e220708b09e4ee1322e1
deleted: sha256:07b3fa89d4b17009eb3988dfc592c7d30ab3ba52d2007832dffcf6d40e3eda7f
deleted: sha256:3a88a5c81eb5c283e72db2dbc6d65cbfd8e80b6c89bb6e714cfaaa0eed99c548
Total reclaimed space: 13.5 MB
```
## Related information
* [volume create](volume_create.md)
* [volume ls](volume_ls.md)
* [volume inspect](volume_inspect.md)
* [volume rm](volume_rm.md)
* [Understand Data Volumes](../../tutorials/dockervolumes.md)
* [system df](system_df.md)
* [container prune](container_prune.md)
* [image prune](container_prune.md)
* [system prune](system_prune.md)

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<!--[metadata]>
+++
title = "volume prune"
description = "Remove unused volumes"
keywords = [volume, prune, delete]
[menu.main]
parent = "smn_cli"
+++
<![end-metadata]-->
# volume prune
```markdown
Usage: docker volume prune
Remove all unused volumes
Options:
-f, --force Do not prompt for confirmation
--help Print usage
```
Remove all unused volumes. Unused volumes are those which are not referenced by any containers
Example output:
```bash
$ docker volume prune
WARNING! This will remove all volumes not used by at least one container.
Are you sure you want to continue? [y/N] y
Deleted Volumes:
07c7bdf3e34ab76d921894c2b834f073721fccfbbcba792aa7648e3a7a664c2e
my-named-vol
Total reclaimed space: 36 B
```
## Related information
* [volume create](volume_create.md)
* [volume ls](volume_ls.md)
* [volume inspect](volume_inspect.md)
* [volume rm](volume_rm.md)
* [Understand Data Volumes](../../tutorials/dockervolumes.md)
* [system df](system_df.md)
* [container prune](container_prune.md)
* [image prune](container_prune.md)
* [system prune](system_prune.md)