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3a9d14d4e9
Followup to #17486: stricter checks on --format. * If a subcommand offers autocompletion for templates, it must also offer a '--format json' option. * If a subcommand has a --format option that DOES NOT offer autocompletion for templates, it must be listed in a hardcoded grandparented-in table of commands where that's not applicable. (Mostly commands like build, commit, save, where "format" is used in the context of "oci/docker"). Only likely to trigger on PRs which add new subcommands, and is intended to catch oversights. Also, test for alphanumeric order in man page tables. Sort all existing tables. Signed-off-by: Ed Santiago <santiago@redhat.com>
102 lines
3.6 KiB
Markdown
102 lines
3.6 KiB
Markdown
% podman-history 1
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## NAME
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podman\-history - Show the history of an image
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## SYNOPSIS
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**podman history** [*options*] *image*[:*tag*|@*digest*]
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**podman image history** [*options*] *image*[:*tag*|@*digest*]
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## DESCRIPTION
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**podman history** displays the history of an image by printing out information
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about each layer used in the image. The information printed out for each layer
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include Created (time and date), Created By, Size, and Comment. The output can
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be truncated or not using the **--no-trunc** flag. If the **--human** flag is
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set, the time of creation and size are printed out in a human readable format.
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The **--quiet** flag displays the ID of the image only when set and the **--format**
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flag is used to print the information using the Go template provided by the user.
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## OPTIONS
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#### **--format**=*format*
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Alter the output for a format like 'json' or a Go template.
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Valid placeholders for the Go template are listed below:
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| **Placeholder** | **Description** |
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|------------------------|---------------------------------------------------------------------------|
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| .Comment | Comment for the layer |
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| .Created | if --human, time elapsed since creation, otherwise time stamp of creation |
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| .CreatedAt | Time when the image layer was created |
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| .CreatedBy | Command used to create the layer |
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| .CreatedSince | Elapsed time since the image layer was created |
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| .ID | Image ID |
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| .Size | Size of layer on disk |
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| .Tags | Image tags |
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#### **--help**, **-h**
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Print usage statement
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#### **--human**, **-H**
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Display sizes and dates in human readable format (default *true*).
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#### **--no-trunc**
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Do not truncate the output (default *false*).
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#### **--quiet**, **-q**
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Print the numeric IDs only (default *false*).
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## EXAMPLES
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```
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$ podman history debian
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ID CREATED CREATED BY SIZE COMMENT
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b676ca55e4f2c 9 weeks ago /bin/sh -c #(nop) CMD ["bash"] 0 B
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<missing> 9 weeks ago /bin/sh -c #(nop) ADD file:ebba725fb97cea4... 45.14 MB
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```
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```
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$ podman history --no-trunc=true --human=false debian
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ID CREATED CREATED BY SIZE COMMENT
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b676ca55e4f2c 2017-07-24T16:52:55Z /bin/sh -c #(nop) CMD ["bash"] 0
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<missing> 2017-07-24T16:52:54Z /bin/sh -c #(nop) ADD file:ebba725fb97cea4... 45142935
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```
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```
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$ podman history --format "{{.ID}} {{.Created}}" debian
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b676ca55e4f2c 9 weeks ago
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<missing> 9 weeks ago
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```
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```
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$ podman history --format json debian
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[
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{
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"id": "b676ca55e4f2c0ce53d0636438c5372d3efeb5ae99b676fa5a5d1581bad46060",
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"created": "2017-07-24T16:52:55.195062314Z",
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"createdBy": "/bin/sh -c #(nop) CMD [\"bash\"]",
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"size": 0,
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"comment": ""
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},
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{
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"id": "b676ca55e4f2c0ce53d0636438c5372d3efeb5ae99b676fa5a5d1581bad46060",
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"created": "2017-07-24T16:52:54.898893387Z",
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"createdBy": "/bin/sh -c #(nop) ADD file:ebba725fb97cea45d0b1b35ccc8144e766fcfc9a78530465c23b0c4674b14042 in / ",
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"size": 45142935,
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"comment": ""
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}
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]
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```
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## SEE ALSO
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**[podman(1)](podman.1.md)**
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## HISTORY
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July 2017, Originally compiled by Urvashi Mohnani <umohnani@redhat.com>
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