cli/components/engine/docs/sources/commandline/basecommands.rst

title

Base commands

description

Common usage and commands

keywords

Examples, Usage

Base commands

Running an interactive shell

# Download a base image
docker pull base

# Run an interactive shell in the base image,
# allocate a tty, attach stdin and stdout
docker run -i -t base /bin/bash

Starting a long-running worker process

# Run docker in daemon mode
(sudo docker -d || echo "Docker daemon already running") &

# Start a very useful long-running process
JOB=$(docker run -d base /bin/sh -c "while true; do echo Hello world; sleep 1; done")

# Collect the output of the job so far
docker logs $JOB

# Kill the job
docker kill $JOB

Listing all running containers

docker ps

Expose a service on a TCP port

# Expose port 4444 of this container, and tell netcat to listen on it
JOB=$(docker run -d -p 4444 base /bin/nc -l -p 4444)

# Which public port is NATed to my container?
PORT=$(docker port $JOB 4444)

# Connect to the public port via the host's public address
echo hello world | nc $(hostname) $PORT

# Verify that the network connection worked
echo "Daemon received: $(docker logs $JOB)"

Continue to the complete Command Line Interface