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Merge pull request #3163 from KGB33/923_cleanup_docker_container_attach_man
Cleaned up formatting/typesetting.
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‎man/src/container/attach.md‎

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@@ -4,13 +4,13 @@ interactively. You can attach to the same contained process multiple times
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simultaneously, screen sharing style, or quickly view the progress of your
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detached process.
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To stop a container, use `CTRL-c`. This key sequence sends `SIGKILL` to the
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To stop a container, use `CTRL-c`. This key sequence sends **SIGKILL** to the
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container. You can detach from the container (and leave it running) using a
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configurable key sequence. The default sequence is `CTRL-p CTRL-q`. You
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configure the key sequence using the **--detach-keys** option or a configuration
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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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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 `-t`).
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# Override the detach sequence
@@ -22,18 +22,18 @@ 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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**--detach-keys**=*key* flag with the **docker attach** command. The format of
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the *key* is either a letter [a-Z], or the **ctrl**-*value*, where *value* is one
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of 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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* **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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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 **docker(1)**.
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@@ -45,22 +45,22 @@ In this example the top command is run inside a container, from an image called
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fedora, in detached mode. The ID from the container is passed into the **docker
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attach** command:
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$ ID=$(sudo docker run -d fedora /usr/bin/top -b)
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$ ID=$(sudo docker run -d ubuntu:20.04 /usr/bin/top -b)
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$ sudo docker attach $ID
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top - 02:05:52 up 3:05, 0 users, load average: 0.01, 0.02, 0.05
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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): 0.1%us, 0.2%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
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Mem: 373572k total, 355560k used, 18012k free, 27872k buffers
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Swap: 786428k total, 0k used, 786428k free, 221740k cached
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PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
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1 root 20 0 17200 1116 912 R 0 0.3 0:00.03 top
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top - 02:05:55 up 3:05, 0 users, load average: 0.01, 0.02, 0.05
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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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top - 00:07:04 up 4:54, 0 users, load average: 0.76, 0.89, 0.81
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Tasks: 1 total, 1 running, 0 sleeping, 0 stopped, 0 zombie
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Cpu(s): 0.0%us, 0.2%sy, 0.0%ni, 99.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
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Mem: 373572k total, 355244k used, 18328k free, 27872k buffers
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Swap: 786428k total, 0k used, 786428k free, 221776k cached
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PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
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1 root 20 0 17208 1144 932 R 0 0.3 0:00.03 top
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%Cpu(s): 2.0 us, 1.4 sy, 0.0 ni, 96.5 id, 0.0 wa, 0.1 hi, 0.0 si, 0.0 st
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MiB Mem : 15846.2 total, 5727.5 free, 2594.4 used, 7524.3 buff/cache
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MiB Swap: 16384.0 total, 16384.0 free, 0.0 used. 12095.6 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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