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docs: improve formatting and highlighting of docker ps reference
this improves the formatting, and code-highlighting of the `docker ps` reference page, and wraps sentences to 80 chars also adds single quotes around the formatting example for labels. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn
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Коммит
07ef0a37f8
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@ -38,15 +38,24 @@ Options:
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Running `docker ps --no-trunc` showing 2 linked containers.
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```bash
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$ docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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4c01db0b339c ubuntu:12.04 bash 17 seconds ago Up 16 seconds 3300-3310/tcp webapp
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d7886598dbe2 crosbymichael/redis:latest /redis-server --dir 33 minutes ago Up 33 minutes 6379/tcp redis,webapp/db
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```
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`docker ps` will show only running containers by default. To see all containers:
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`docker ps -a`
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The `docker ps` command only shows running containers by default. To see all
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containers, use the `-a` (or `--all`) flag:
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`docker ps` will group exposed ports into a single range if possible. E.g., a container that exposes TCP ports `100, 101, 102` will display `100-102/tcp` in the `PORTS` column.
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```bash
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$ docker ps -a
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```
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`docker ps` groups exposed ports into a single range if possible. E.g., a
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container that exposes TCP ports `100, 101, 102` displays `100-102/tcp` in
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the `PORTS` column.
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## Filtering
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@ -74,16 +83,22 @@ value.
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The following filter matches containers with the `color` label regardless of its value.
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```bash
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$ docker ps --filter "label=color"
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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673394ef1d4c busybox "top" 47 seconds ago Up 45 seconds nostalgic_shockley
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d85756f57265 busybox "top" 52 seconds ago Up 51 seconds high_albattani
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```
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The following filter matches containers with the `color` label with the `blue` value.
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```bash
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$ docker ps --filter "label=color=blue"
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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d85756f57265 busybox "top" About a minute ago Up About a minute high_albattani
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```
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#### Name
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@ -91,49 +106,66 @@ The `name` filter matches on all or part of a container's name.
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The following filter matches all containers with a name containing the `nostalgic_stallman` string.
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```bash
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$ docker ps --filter "name=nostalgic_stallman"
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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9b6247364a03 busybox "top" 2 minutes ago Up 2 minutes nostalgic_stallman
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```
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You can also filter for a substring in a name as this shows:
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```bash
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$ docker ps --filter "name=nostalgic"
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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715ebfcee040 busybox "top" 3 seconds ago Up 1 seconds i_am_nostalgic
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9b6247364a03 busybox "top" 7 minutes ago Up 7 minutes nostalgic_stallman
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673394ef1d4c busybox "top" 38 minutes ago Up 38 minutes nostalgic_shockley
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```
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#### Exited
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The `exited` filter matches containers by exist status code. For example, to filter for containers
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that have exited successfully:
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The `exited` filter matches containers by exist status code. For example, to
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filter for containers that have exited successfully:
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```bash
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$ docker ps -a --filter 'exited=0'
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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ea09c3c82f6e registry:latest /srv/run.sh 2 weeks ago Exited (0) 2 weeks ago 127.0.0.1:5000->5000/tcp desperate_leakey
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106ea823fe4e fedora:latest /bin/sh -c 'bash -l' 2 weeks ago Exited (0) 2 weeks ago determined_albattani
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48ee228c9464 fedora:20 bash 2 weeks ago Exited (0) 2 weeks ago tender_torvalds
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```
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#### Status
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The `status` filter matches containers by status. You can filter using `created`, `restarting`, `running`, `paused`, `exited` and `dead`. For example, to filter for `running` containers:
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The `status` filter matches containers by status. You can filter using
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`created`, `restarting`, `running`, `paused`, `exited` and `dead`. For example,
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to filter for `running` containers:
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```bash
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$ docker ps --filter status=running
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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715ebfcee040 busybox "top" 16 minutes ago Up 16 minutes i_am_nostalgic
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d5c976d3c462 busybox "top" 23 minutes ago Up 23 minutes top
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9b6247364a03 busybox "top" 24 minutes ago Up 24 minutes nostalgic_stallman
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```
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To filter for `paused` containers:
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```bash
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$ docker ps --filter status=paused
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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673394ef1d4c busybox "top" About an hour ago Up About an hour (Paused) nostalgic_shockley
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```
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#### Ancestor
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The `ancestor` filter matches containers based on its image or a descendant of it. The filter supports the
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following image representation:
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The `ancestor` filter matches containers based on its image or a descendant of
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it. The filter supports the following image representation:
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- image
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- image:tag
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@ -141,67 +173,91 @@ following image representation:
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- short-id
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- full-id
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If you don't specify a `tag`, the `latest` tag is used. For example, to filter for containers that use the
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latest `ubuntu` image:
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If you don't specify a `tag`, the `latest` tag is used. For example, to filter
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for containers that use the latest `ubuntu` image:
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```bash
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$ docker ps --filter ancestor=ubuntu
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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919e1179bdb8 ubuntu-c1 "top" About a minute ago Up About a minute admiring_lovelace
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5d1e4a540723 ubuntu-c2 "top" About a minute ago Up About a minute admiring_sammet
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82a598284012 ubuntu "top" 3 minutes ago Up 3 minutes sleepy_bose
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bab2a34ba363 ubuntu "top" 3 minutes ago Up 3 minutes focused_yonath
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```
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Match containers based on the `ubuntu-c1` image which, in this case, is a child of `ubuntu`:
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Match containers based on the `ubuntu-c1` image which, in this case, is a child
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of `ubuntu`:
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```bash
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$ docker ps --filter ancestor=ubuntu-c1
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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919e1179bdb8 ubuntu-c1 "top" About a minute ago Up About a minute admiring_lovelace
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```
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Match containers based on the `ubuntu` version `12.04.5` image:
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```bash
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$ docker ps --filter ancestor=ubuntu:12.04.5
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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82a598284012 ubuntu:12.04.5 "top" 3 minutes ago Up 3 minutes sleepy_bose
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```
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The following matches containers based on the layer `d0e008c6cf02` or an image that have this layer
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in it's layer stack.
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The following matches containers based on the layer `d0e008c6cf02` or an image
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that have this layer in it's layer stack.
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```bash
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$ docker ps --filter ancestor=d0e008c6cf02
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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82a598284012 ubuntu:12.04.5 "top" 3 minutes ago Up 3 minutes sleepy_bose
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```
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#### Before
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The `before` filter shows only containers created before the container with given id or name. For example,
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having these containers created:
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The `before` filter shows only containers created before the container with
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given id or name. For example, having these containers created:
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```bash
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$ docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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9c3527ed70ce busybox "top" 14 seconds ago Up 15 seconds desperate_dubinsky
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4aace5031105 busybox "top" 48 seconds ago Up 49 seconds focused_hamilton
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6e63f6ff38b0 busybox "top" About a minute ago Up About a minute distracted_fermat
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```
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Filtering with `before` would give:
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```bash
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$ docker ps -f before=9c3527ed70ce
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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4aace5031105 busybox "top" About a minute ago Up About a minute focused_hamilton
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6e63f6ff38b0 busybox "top" About a minute ago Up About a minute distracted_fermat
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```
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#### Since
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The `since` filter shows only containers created since the container with given id or name. For example,
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with the same containers as in `before` filter:
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The `since` filter shows only containers created since the container with given
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id or name. For example, with the same containers as in `before` filter:
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```bash
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$ docker ps -f since=6e63f6ff38b0
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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9c3527ed70ce busybox "top" 10 minutes ago Up 10 minutes desperate_dubinsky
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4aace5031105 busybox "top" 10 minutes ago Up 10 minutes focused_hamilton
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```
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#### Volume
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The `volume` filter shows only containers that mount a specific volume or have a volume mounted in a specific path:
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The `volume` filter shows only containers that mount a specific volume or have
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a volume mounted in a specific path:
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```bash
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$ docker ps --filter volume=remote-volume --format "table {{.ID}}\t{{.Mounts}}"
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CONTAINER ID MOUNTS
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9c3527ed70ce remote-volume
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@ -209,6 +265,7 @@ The `volume` filter shows only containers that mount a specific volume or have a
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$ docker ps --filter volume=/data --format "table {{.ID}}\t{{.Mounts}}"
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CONTAINER ID MOUNTS
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9c3527ed70ce remote-volume
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```
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#### Network
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@ -223,6 +280,7 @@ $ docker run -d --net=net1 --name=test1 ubuntu top
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$ docker run -d --net=net2 --name=test2 ubuntu top
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$ docker ps --filter network=net1
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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9d4893ed80fe ubuntu "top" 10 minutes ago Up 10 minutes test1
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```
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@ -233,21 +291,24 @@ the network id as a filter;
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```bash
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$ docker network inspect --format "{{.ID}}" net1
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8c0b4110ae930dbe26b258de9bc34a03f98056ed6f27f991d32919bfe401d7c5
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$ docker ps --filter network=8c0b4110ae930dbe26b258de9bc34a03f98056ed6f27f991d32919bfe401d7c5
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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9d4893ed80fe ubuntu "top" 10 minutes ago Up 10 minutes test1
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```
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## Formatting
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The formatting option (`--format`) will pretty-print container output using a Go template.
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The formatting option (`--format`) pretty-prints container output using a Go
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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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--------------|----------------------------------------------------------------------------------------------------
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`.ID` | Container ID
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`.Image` | Image ID
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`.Command` | Quoted command
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@ -258,26 +319,33 @@ Placeholder | Description
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`.Size` | Container disk size.
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`.Names` | Container names.
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`.Labels` | All labels assigned to the container.
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`.Label` | Value of a specific label for this container. For example `{{.Label "com.docker.swarm.cpu"}}`
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`.Label` | Value of a specific label for this container. For example `'{{.Label "com.docker.swarm.cpu"}}'`
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`.Mounts` | Names of the volumes mounted in this container.
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When using the `--format` option, the `ps` command will either output the data exactly as the template
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declares or, when using the `table` directive, will include column headers as well.
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When using the `--format` option, the `ps` command will either output the data
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exactly as the template declares or, when using the `table` directive, includes
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column headers as well.
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The following example uses a template without headers and outputs the `ID` and `Command`
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entries separated by a colon for all running containers:
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The following example uses a template without headers and outputs the `ID` and
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`Command` entries separated by a colon for all running containers:
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```bash
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$ docker ps --format "{{.ID}}: {{.Command}}"
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a87ecb4f327c: /bin/sh -c #(nop) MA
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01946d9d34d8: /bin/sh -c #(nop) MA
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c1d3b0166030: /bin/sh -c yum -y up
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41d50ecd2f57: /bin/sh -c #(nop) MA
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```
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To list all running containers with their labels in a table format you can use:
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```bash
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$ docker ps --format "table {{.ID}}\t{{.Labels}}"
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CONTAINER ID LABELS
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a87ecb4f327c com.docker.swarm.node=ubuntu,com.docker.swarm.storage=ssd
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01946d9d34d8
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c1d3b0166030 com.docker.swarm.node=debian,com.docker.swarm.cpu=6
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41d50ecd2f57 com.docker.swarm.node=fedora,com.docker.swarm.cpu=3,com.docker.swarm.storage=ssd
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```
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