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docker-logs - Fetch the logs of a container


docker logs [-f|--follow] [--help] [--since[=SINCE]] [-t|--timestamps] [--tail[="all"]]


The docker logs command batch-retrieves whatever logs are present for a container at the
time of execution. This does not guarantee execution order when combined with a docker run
(i.e., your run may not have generated any logs at the time you execute docker logs).

The docker logs --follow command combines commands docker logs and docker attach. It will
first return all logs from the beginning and then continue streaming new output from the
container’s stdout and stderr.

Warning: This command works only for the json-file or journald logging drivers.


Print usage statement

-f, --follow=true|false
Follow log output. The default is false.

Show logs since timestamp

-t, --timestamps=true|false
Show timestamps. The default is false.

Output the specified number of lines at the end of logs (defaults to all logs)

The --since option can be Unix timestamps, date formated timestamps, or Go duration
strings (e.g. 10m, 1h30m) computed relative to the client machine’s time. Supported
formats for date formated time stamps include RFC3339Nano, RFC3339, 2006-01-02T15:04:05,
2006-01-02T15:04:05.999999999, 2006-01-02Z07:00, and 2006-01-02. The local timezone on the
client will be used if you do not provide either a Z or a +-00:00 timezone offset at the
end of the timestamp. When providing Unix timestamps enter seconds[.nanoseconds], where
seconds is the number of seconds that have elapsed since January 1, 1970 (midnight
UTC/GMT), not counting leap seconds (aka Unix epoch or Unix time), and the optional
.nanoseconds field is a fraction of a second no more than nine digits long. You can
combine the --since option with either or both of the --follow or --tail options.


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⟩ July 2014, updated by Sven Dowideit ⟨SvenDowideit@home.org.au
April 2015, updated by Ahmet Alp Balkan ⟨ahmetalpbalkan@gmail.com⟩ October 2015, updated
by Mike Brown ⟨mikebrow@gmail.com

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