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I trying to copy a file from a container to my local machine.

As you can see below, my container is runnig... ❯ docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
1cbed27defce postgres "docker-entrypoint.s…" 17 months ago Up 44 minutes 0.0.0.0:5432->5432/tcp pg

When I use the docker cp command, I have this output...

❯ sudo docker cp pg:recom.bkp /home/melnik/dev/recom                  
[sudo] senha para melnik: 
Error response from daemon: No such container: pg

I've already tried the command docker exec pg pwd to get the correct path, but the output is just /

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  • Why are you using sudo? Commented Feb 13, 2024 at 2:05
  • Does it work if you use the container id? docker cp 1cbed27defce:recom.bkp /home/melnik/dev/recom Commented Feb 13, 2024 at 2:10
  • Are you using Docker Desktop? Since sudo changes your user identity and home directory, it's possible that docker and sudo docker are pointed at different Docker daemons. If you're on a native-Linux system and sudo docker ... works, you don't really need Docker Desktop. Commented Feb 13, 2024 at 3:55
  • If I run the command without sudo, the output is: ❯ docker cp pg:/recom.bkp /dev Successfully copied 32.8kB to /dev open /dev/recom.bkp: permission denied Commented Feb 13, 2024 at 22:57
  • Whoa, don't write into /dev, that's a very bad idea. See baeldung.com/linux/dev-directory Commented Feb 14, 2024 at 0:31
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