# Tryton-cron - how to use?
**URL:** https://discuss.tryton.org/t/tryton-cron-how-to-use/3078
**Category:** User
**Created:** [July 29, 2020, 12:38pm UTC](https://discuss.tryton.org/t/tryton-cron-how-to-use/3078 "2020-07-29T12:38:07Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@herrdeh](https://discuss.tryton.org/u/herrdeh)
#### Post date: [July 29, 2020, 12:38pm UTC](https://discuss.tryton.org/t/tryton-cron-how-to-use/3078/1 "2020-07-29T12:38:07Z")
I’m trying to run tryton-cron, as described here:
https://hub.docker.com/r/tryton/tryton/
> $ sudo docker ps
> CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
> 18ccc2fcd7db tryton/tryton “/entrypoint.sh uwsg…” 3 months ago Up 4 minutes 0.0.0.0:8000-\>8000/tcp tryton
> ed01cfc74801 postgres “docker-entrypoint.s…” 3 months ago Up 4 minutes 5432/tcp tryton-postgres
Now, with the given command, this happens (passwd replaced by real PW):
> $ sudo docker run --name tryton-cron --link tryton-postgres:postgres -e DB\_PASSWORD=mysecretpassword -d tryton/tryton trytond-cron -d tryton
> docker: Error response from daemon: Conflict. The container name “/tryton-cron” is already in use by container “fb38caeb97739e1ad62acea498ae053b523b18e88390f5c1e8f49bee2c46fa1a”. You have to remove (or rename) that container to be able to reuse that name.
What should I do?
Cheers,
Wolf
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### Author:  [@dave](https://discuss.tryton.org/u/dave)
#### Post date: [July 29, 2020, 12:59pm UTC](https://discuss.tryton.org/t/tryton-cron-how-to-use/3078/2 "2020-07-29T12:59:47Z")
It looks like you already have a docker container called tryton-cron.
The `docker ps` command only lists containers that are currently running, try using `sudo docker ps --all` to see a list of running and stopped containers.
You can use `sudo docker rm ` to remove the container.
Once the old tryton-cron container has been removed your command should then work.
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### Author:  [@herrdeh](https://discuss.tryton.org/u/herrdeh)
#### Post date: [July 29, 2020, 1:13pm UTC](https://discuss.tryton.org/t/tryton-cron-how-to-use/3078/3 "2020-07-29T13:13:18Z")
Mr. Harper - docker hero!
Good to know that `sudo docker ps --all` exists.
Worked - thank you very much!
Cheers,
Wolf
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### Author:  [@system](https://discuss.tryton.org/u/system)
#### Post date: [August 28, 2020, 1:13pm UTC](https://discuss.tryton.org/t/tryton-cron-how-to-use/3078/4 "2020-08-28T13:13:24Z")
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