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moby--moby/docs/man/docker-diff.1.md
Dan Walsh a2b529ead2 --help option and help command should print to stdout not stderr
--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)
2015-01-06 13:40:14 +01:00

1.1 KiB

% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014

NAME

docker-diff - Inspect changes on a container's filesystem

SYNOPSIS

docker diff [--help] CONTAINER

DESCRIPTION

Inspect changes on a container's filesystem. You can use the full or shortened container ID or the container name set using docker run --name option.

OPTIONS

--help Print usage statement

EXAMPLES

Inspect the changes to on a nginx container:

# docker diff 1fdfd1f54c1b
C /dev
C /dev/console
C /dev/core
C /dev/stdout
C /dev/fd
C /dev/ptmx
C /dev/stderr
C /dev/stdin
C /run
A /run/nginx.pid
C /var/lib/nginx/tmp
A /var/lib/nginx/tmp/client_body
A /var/lib/nginx/tmp/fastcgi
A /var/lib/nginx/tmp/proxy
A /var/lib/nginx/tmp/scgi
A /var/lib/nginx/tmp/uwsgi
C /var/log/nginx
A /var/log/nginx/access.log
A /var/log/nginx/error.log

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