a2b529ead2
--help and help are successful commands so output should not go to error.
QE teams have requested this change, also users doing docker help | less
or docker run --help | less would expect this to work.
Usage statement should only be printed when the user asks for it.
Errors should print error message and then suggest the docker COMMAND --help
command to see usage information.
The current behaviour causes the user to have to search for the error message
and sometimes scrolls right off the screen. For example a error on a
"docker run" command is very difficult to diagnose.
Finally erros should always exit with a non 0 exit code, if the user
makes a CLI error.
Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
2.6 KiB
% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014
NAME
docker-ps - List containers
SYNOPSIS
docker ps [-a|--all[=false]] [--before[=BEFORE]] [--help] [-f|--filter[=[]]] [-l|--latest[=false]] [-n[=-1]] [--no-trunc[=false]] [-q|--quiet[=false]] [-s|--size[=false]] [--since[=SINCE]]
DESCRIPTION
List the containers in the local repository. By default this show only the running containers.
OPTIONS
-a, --all=true|false Show all containers. Only running containers are shown by default. The default is false.
--before="" Show only container created before Id or Name, include non-running ones.
--help Print usage statement
-f, --filter=[] Provide filter values. Valid filters: exited= - containers with exit code of status=(restarting|running|paused|exited)
-l, --latest=true|false Show only the latest created container, include non-running ones. The default is false.
-n=-1 Show n last created containers, include non-running ones.
--no-trunc=true|false Don't truncate output. The default is false.
-q, --quiet=true|false Only display numeric IDs. The default is false.
-s, --size=true|false Display total file sizes. The default is false.
--since="" Show only containers created since Id or Name, include non-running ones.
EXAMPLES
Display all containers, including non-running
# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a87ecb4f327c fedora:20 /bin/sh -c #(nop) MA 20 minutes ago Exit 0 desperate_brattain
01946d9d34d8 vpavlin/rhel7:latest /bin/sh -c #(nop) MA 33 minutes ago Exit 0 thirsty_bell
c1d3b0166030 acffc0358b9e /bin/sh -c yum -y up 2 weeks ago Exit 1 determined_torvalds
41d50ecd2f57 fedora:20 /bin/sh -c #(nop) MA 2 weeks ago Exit 0 drunk_pike
Display only IDs of all containers, including non-running
# docker ps -a -q
a87ecb4f327c
01946d9d34d8
c1d3b0166030
41d50ecd2f57
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 August 2014, updated by Sven Dowideit SvenDowideit@home.org.au November 2014, updated by Sven Dowideit SvenDowideit@home.org.au