% DOCKER(1) Docker User Manuals

 % Docker Community
 % JUNE 2014

 # NAME
 docker-attach - Attach to a running container
 
 # SYNOPSIS

 **docker attach**

 [**--help**]

 [**--no-stdin**[=*false*]]
 [**--sig-proxy**[=*true*]]

 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.

 
 You can detach from the container (and leave it running) with `CTRL-p CTRL-q`
 (for a quiet exit) or `CTRL-c` which will send a `SIGKILL` to the container.
 When you are attached to a container, and exit its main process, the process's
 exit code will be returned to the client.
 
 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`).

 # OPTIONS

 **--help**
   Print usage statement
 

 **--no-stdin**=*true*|*false*

    Do not attach STDIN. The default is *false*.

 **--sig-proxy**=*true*|*false*

    Proxy all received signals to the process (non-TTY mode only). SIGCHLD, SIGKILL, and SIGSTOP are not proxied. The default is *true*.

 
 # 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
 
 # HISTORY

 April 2014, Originally compiled by William Henry (whenry at redhat dot com)

 based on docker.com source material and internal work.

 June 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>