NAME

       docker-container-attach  -  Attach  local  standard  input, output, and error streams to a
       running container

SYNOPSIS

       docker container attach [OPTIONS] CONTAINER

DESCRIPTION

       The docker attach  command  allows  you  to  attach  to  a  running  container  using  the
       container's  ID or name, either to view its ongoing output or to control it interactively.
       You can attach to the same contained process multiple times simultaneously, screen sharing
       style, or quickly view the progress of your detached process.

       To stop a container, use CTRL-c. This key sequence sends SIGKILL to the container. You can
       detach from the container (and leave it running) using a configurable  key  sequence.  The
       default  sequence is CTRL-p CTRL-q. You configure the key sequence using the --detach-keys
       option  or  a  configuration  file.  See  config-json(5)  for  documentation  on  using  a
       configuration file.

       It  is forbidden to redirect the standard input of a docker attach command while attaching
       to a tty-enabled container (i.e.: launched with -t).

Override the detach sequence

       If you want, you can configure an override the Docker key sequence for  detach.   This  is
       useful  if  the  Docker  default  sequence  conflicts  with key sequence you use for other
       applications. There are two ways to define  your  own  detach  key  sequence,  as  a  per-
       container override or as a configuration property on  your entire configuration.

       To  override  the sequence for an individual container, use the --detach-keys="<sequence>"
       flag with the docker attach command. The format of the <sequence> is either a  letter  [a-
       Z], or the ctrl- combined with any of the following:

              • a-z (a single lowercase alpha character )

              • @ (at sign)

              • [ (left bracket)

              • \\ (two backward slashes)

              • _ (underscore)

              • ^ (caret)

       These  a,  ctrl-a,  X,  or  ctrl-\\  values  are  all  examples of valid key sequences. To
       configure  a  different  configuration  default  key  sequence  for  all  containers,  see
       docker(1).

EXAMPLES

Attaching to a container

       In this example the top command is run inside a container, from an image called fedora, in
       detached mode. The ID from the container is passed into the docker attach command:

              $ ID=$(sudo docker run -d fedora /usr/bin/top -b)
              $ sudo docker attach $ID
              top - 02:05:52 up  3:05,  0 users,  load average: 0.01, 0.02, 0.05
              Tasks:   1 total,   1 running,   0 sleeping,   0 stopped,   0 zombie
              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
              Mem:    373572k total,   355560k used,    18012k free,    27872k buffers
              Swap:   786428k total,        0k used,   786428k free,   221740k cached

              PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
              1 root      20   0 17200 1116  912 R    0  0.3   0:00.03 top

              top - 02:05:55 up  3:05,  0 users,  load average: 0.01, 0.02, 0.05
              Tasks:   1 total,   1 running,   0 sleeping,   0 stopped,   0 zombie
              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
              Mem:    373572k total,   355244k used,    18328k free,    27872k buffers
              Swap:   786428k total,        0k used,   786428k free,   221776k cached

              PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
              1 root      20   0 17208 1144  932 R    0  0.3   0:00.03 top

OPTIONS

       --detach-keys=""      Override the key sequence for detaching a container

       -h, --help[=false]      help for attach

       --no-stdin[=false]      Do not attach STDIN

       --sig-proxy[=true]      Proxy all received signals to the process

SEE ALSO

       docker-container(1)