Docker exec command

Docker Command Summary

docker exec :Execute commands in running containers

Syntax

docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

OPTIONS description:

• -d :Detached mode: Run in the background

• -i :Keep STDIN open even if not attached

• -t :Allocate a pseudo terminal

Online Example

Execute the script inside the container mynginx in interactive mode /root/w3codebox.sh script:

w3codebox@w3codebox:~$ docker exec　-it    mynginx　/bin/sh　/root/w3codebox.sh
http://www.oldtoolbag.com/

Open an interactive terminal in the container mynginx:

w3codebox@w3codebox:~$ docker exec　-i　-t    mynginx　/bin/bash
root@b1a0703e41e7:/#

You can also use docker ps -Use the 'a' command to view containers that are already running, and then enter the container using the container ID.

View the container IDs of containers that are already running:

# docker ps　-a　
...
9df70f9a0714　　　　　　　　openjdk/usercode/script.sh...　
...

The first column's 9df70f9a0714 This is the container ID.

Execute bash for the specified container using the exec command:

# docker exec　-it　9df70f9a0714　/bin/bash

Docker Command Summary