In docker, you can use the ps command to view running containers. The purpose of this command is to list the containers. When the parameter is set to "-a", all containers including those that are not running can be displayed. The syntax is "docker ps -a".
The operating environment of this tutorial: linux7.3 system, docker-1.13.1 version, Dell G3 computer.
What command docker uses to view running containers
docker ps: List containers
Syntax
docker ps [OPTIONS]
OPTIONS Description:
-a: Display all containers, including those that are not running.
-f: Filter the displayed content based on conditions.
--format: Specify the template file for the return value.
-l: Display recently created containers.
-n: List the recently created n containers.
--no-trunc: Do not truncate output.
-q: Silent mode, only the container number is displayed.
-s: Display the total file size.
Instance
Lists all running container information.
runoob@runoob:~$ docker ps CONTAINER ID IMAGE COMMAND ... PORTS NAMES 09b93464c2f7 nginx:latest "nginx -g 'daemon off" ... 80/tcp, 443/tcp myrunoob 96f7f14e99ab mysql:5.6 "docker-entrypoint.sh" ... 0.0.0.0:3306->3306/tcp mymysql
Output details:
CONTAINER ID: Container ID.
IMAGE: The image used.
COMMAND: The command to run when starting the container.
CREATED: The creation time of the container.
STATUS: Container status.
There are 7 states:
created (created)
restarting (restarting)
running (running)
removing (migrating)
paused (paused)
exited (stopped)
dead (dead)
PORTS: Container port information and used Connection type (tcp\udp).
NAMES: Automatically assigned container names.
List the information of the 5 recently created containers.
runoob@runoob:~$ docker ps -n 5 CONTAINER ID IMAGE COMMAND CREATED 09b93464c2f7 nginx:latest "nginx -g 'daemon off" 2 days ago ... b8573233d675 nginx:latest "/bin/bash" 2 days ago ... b1a0703e41e7 nginx:latest "nginx -g 'daemon off" 2 days ago ... f46fb1dec520 5c6e1090e771 "/bin/sh -c 'set -x \t" 2 days ago ... a63b4a5597de 860c279d2fec "bash" 2 days ago ...
Recommended learning: "docker video tutorial"
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