github.com/flavio/docker@v0.1.3-0.20170117145210-f63d1a6eec47/docs/reference/commandline/system_prune.md (about)

     1  ---
     2  title: "system prune"
     3  description: "Remove unused data"
     4  keywords: "system, prune, delete, remove"
     5  ---
     6  
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    15  
    16  # system prune
    17  
    18  ```markdown
    19  Usage:	docker system prune [OPTIONS]
    20  
    21  Delete unused data
    22  
    23  Options:
    24    -a, --all             Remove all unused images not just dangling ones
    25        --filter filter   Provide filter values (e.g. 'until=<timestamp>')
    26    -f, --force           Do not prompt for confirmation
    27        --help            Print usage
    28  ```
    29  
    30  Remove all unused containers, volumes, networks and images (both dangling and unreferenced).
    31  
    32  Example output:
    33  
    34  ```bash
    35  $ docker system prune -a
    36  WARNING! This will remove:
    37  	- all stopped containers
    38  	- all volumes not used by at least one container
    39  	- all networks not used by at least one container
    40  	- all images without at least one container associated to them
    41  Are you sure you want to continue? [y/N] y
    42  Deleted Containers:
    43  0998aa37185a1a7036b0e12cf1ac1b6442dcfa30a5c9650a42ed5010046f195b
    44  73958bfb884fa81fa4cc6baf61055667e940ea2357b4036acbbe25a60f442a4d
    45  
    46  Deleted Volumes:
    47  named-vol
    48  
    49  Deleted Images:
    50  untagged: my-curl:latest
    51  deleted: sha256:7d88582121f2a29031d92017754d62a0d1a215c97e8f0106c586546e7404447d
    52  deleted: sha256:dd14a93d83593d4024152f85d7c63f76aaa4e73e228377ba1d130ef5149f4d8b
    53  untagged: alpine:3.3
    54  deleted: sha256:695f3d04125db3266d4ab7bbb3c6b23aa4293923e762aa2562c54f49a28f009f
    55  untagged: alpine:latest
    56  deleted: sha256:ee4603260daafe1a8c2f3b78fd760922918ab2441cbb2853ed5c439e59c52f96
    57  deleted: sha256:9007f5987db353ec398a223bc5a135c5a9601798ba20a1abba537ea2f8ac765f
    58  deleted: sha256:71fa90c8f04769c9721459d5aa0936db640b92c8c91c9b589b54abd412d120ab
    59  deleted: sha256:bb1c3357b3c30ece26e6604aea7d2ec0ace4166ff34c3616701279c22444c0f3
    60  untagged: my-jq:latest
    61  deleted: sha256:6e66d724542af9bc4c4abf4a909791d7260b6d0110d8e220708b09e4ee1322e1
    62  deleted: sha256:07b3fa89d4b17009eb3988dfc592c7d30ab3ba52d2007832dffcf6d40e3eda7f
    63  deleted: sha256:3a88a5c81eb5c283e72db2dbc6d65cbfd8e80b6c89bb6e714cfaaa0eed99c548
    64  
    65  Total reclaimed space: 13.5 MB
    66  ```
    67  
    68  ## Filtering
    69  
    70  The filtering flag (`-f` or `--filter`) format is of "key=value". If there is more
    71  than one filter, then pass multiple flags (e.g., `--filter "foo=bar" --filter "bif=baz"`)
    72  
    73  The currently supported filters are:
    74  
    75  * until (`<timestamp>`) - only remove containers, images, and networks created before given timestamp
    76  
    77  The `until` filter can be Unix timestamps, date formatted
    78  timestamps, or Go duration strings (e.g. `10m`, `1h30m`) computed
    79  relative to the daemon machine’s time. Supported formats for date
    80  formatted time stamps include RFC3339Nano, RFC3339, `2006-01-02T15:04:05`,
    81  `2006-01-02T15:04:05.999999999`, `2006-01-02Z07:00`, and `2006-01-02`. The local
    82  timezone on the daemon will be used if you do not provide either a `Z` or a
    83  `+-00:00` timezone offset at the end of the timestamp.  When providing Unix
    84  timestamps enter seconds[.nanoseconds], where seconds is the number of seconds
    85  that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap
    86  seconds (aka Unix epoch or Unix time), and the optional .nanoseconds field is a
    87  fraction of a second no more than nine digits long.
    88  
    89  ## Related information
    90  
    91  * [volume create](volume_create.md)
    92  * [volume ls](volume_ls.md)
    93  * [volume inspect](volume_inspect.md)
    94  * [volume rm](volume_rm.md)
    95  * [volume prune](volume_prune.md)
    96  * [Understand Data Volumes](https://docs.docker.com/engine/tutorials/dockervolumes/)
    97  * [system df](system_df.md)
    98  * [container prune](container_prune.md)
    99  * [image prune](image_prune.md)
   100  * [network prune](network_prune.md)
   101  * [system prune](system_prune.md)