mirror of https://github.com/docker/cli.git
docs: move "--detach-keys" example to examples section
Also adds a named anchor, so that the section gets linked from the options table. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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Sebastiaan van Stijn
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@ -9,11 +9,11 @@ Attach local standard input, output, and error streams to a running container
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### Options
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| Name | Type | Default | Description |
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|:----------------|:---------|:--------|:----------------------------------------------------|
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| `--detach-keys` | `string` | | Override the key sequence for detaching a container |
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| `--no-stdin` | | | Do not attach STDIN |
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| `--sig-proxy` | | | Proxy all received signals to the process |
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| Name | Type | Default | Description |
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|:--------------------------------|:---------|:--------|:----------------------------------------------------|
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| [`--detach-keys`](#detach-keys) | `string` | | Override the key sequence for detaching a container |
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| `--no-stdin` | | | Do not attach STDIN |
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| `--sig-proxy` | | | Proxy all received signals to the process |
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<!---MARKER_GEN_END-->
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@ -56,30 +56,6 @@ performance critical applications that generate a lot of output in the
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foreground over a slow client connection. Instead, users should use the
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`docker logs` command to get access to the logs.
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### Override the detach sequence
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If you want, you can configure an override the Docker key sequence for detach.
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This is useful if the Docker default sequence conflicts with key sequence you
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use for other applications. There are two ways to define your own detach key
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sequence, as a per-container override or as a configuration property on your
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entire configuration.
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To override the sequence for an individual container, use the
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`--detach-keys="<sequence>"` flag with the `docker attach` command. The format of
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the `<sequence>` is either a letter [a-Z], or the `ctrl-` combined with any of
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the following:
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* `a-z` (a single lowercase alpha character )
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* `@` (at sign)
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* `[` (left bracket)
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* `\\` (two backward slashes)
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* `_` (underscore)
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* `^` (caret)
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These `a`, `ctrl-a`, `X`, or `ctrl-\\` values are all examples of valid key
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sequences. To configure a different configuration default key sequence for all
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containers, see [**Configuration file** section](cli.md#configuration-files).
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## Examples
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### Attach to and detach from a running container
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@ -168,3 +144,27 @@ $ docker ps -a --filter name=test
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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a2fe3fd886db alpine "/bin/sh" About a minute ago Exited (13) 40 seconds ago test
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```
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### <a name="detach-keys"></a> Override the detach sequence (--detach-keys)
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Use the `--detach-keys` option to override the Docker key sequence for detach.
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This is useful if the Docker default sequence conflicts with key sequence you
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use for other applications. There are two ways to define your own detach key
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sequence, as a per-container override or as a configuration property on your
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entire configuration.
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To override the sequence for an individual container, use the
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`--detach-keys="<sequence>"` flag with the `docker attach` command. The format of
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the `<sequence>` is either a letter [a-Z], or the `ctrl-` combined with any of
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the following:
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* `a-z` (a single lowercase alpha character )
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* `@` (at sign)
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* `[` (left bracket)
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* `\\` (two backward slashes)
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* `_` (underscore)
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* `^` (caret)
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These `a`, `ctrl-a`, `X`, or `ctrl-\\` values are all examples of valid key
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sequences. To configure a different configuration default key sequence for all
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containers, see [**Configuration file** section](cli.md#configuration-files).
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@ -13,9 +13,29 @@ file. See **config-json(5)** for documentation on using a configuration file.
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It is forbidden to redirect the standard input of a **docker attach** command while
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attaching to a TTY-enabled container (i.e., launched with `-i` and `-t`).
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# Override the detach sequence
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# EXAMPLES
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If you want, you can configure an override the Docker key sequence for detach.
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## Attaching to a container
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In this example the top command is run inside a container from an ubuntu image,
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in detached mode, then attaches to it, and then terminates the container
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with `CTRL-c`:
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$ docker run -d --name topdemo ubuntu:20.04 /usr/bin/top -b
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$ docker attach topdemo
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top - 00:07:01 up 4:54, 0 users, load average: 0.83, 0.91, 0.82
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Tasks: 1 total, 1 running, 0 sleeping, 0 stopped, 0 zombie
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%Cpu(s): 2.3 us, 1.6 sy, 0.0 ni, 95.9 id, 0.0 wa, 0.1 hi, 0.1 si, 0.0 st
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MiB Mem : 15846.2 total, 5729.2 free, 2592.5 used, 7524.4 buff/cache
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MiB Swap: 16384.0 total, 16384.0 free, 0.0 used. 12097.3 avail Mem
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PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
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1 root 20 0 5976 3256 2828 R 0.0 0.0 0:00.04 top
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^C
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## Override the detach sequence
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Use the **--detach-keys** option to override the Docker key sequence for detach.
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This is useful if the Docker default sequence conflicts with key sequence you
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use for other applications. There are two ways to define your own detach key
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sequence, as a per-container override or as a configuration property on your
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@ -37,22 +57,3 @@ These **a**, **ctrl-a**, **X**, or **ctrl-\\** values are all examples of valid
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sequences. To configure a different configuration default key sequence for all
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containers, see **docker(1)**.
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# EXAMPLES
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## Attaching to a container
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In this example the top command is run inside a container from an ubuntu image,
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in detached mode, then attaches to it, and then terminates the container
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with `CTRL-c`:
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$ docker run -d --name topdemo ubuntu:20.04 /usr/bin/top -b
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$ docker attach topdemo
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top - 00:07:01 up 4:54, 0 users, load average: 0.83, 0.91, 0.82
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Tasks: 1 total, 1 running, 0 sleeping, 0 stopped, 0 zombie
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%Cpu(s): 2.3 us, 1.6 sy, 0.0 ni, 95.9 id, 0.0 wa, 0.1 hi, 0.1 si, 0.0 st
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MiB Mem : 15846.2 total, 5729.2 free, 2592.5 used, 7524.4 buff/cache
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MiB Swap: 16384.0 total, 16384.0 free, 0.0 used. 12097.3 avail Mem
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PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
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1 root 20 0 5976 3256 2828 R 0.0 0.0 0:00.04 top
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^C
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