STEP BY STEP PRACTICALS
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Friday, 11 September 2020
LINUX - HOW TO ADD A USER IN LINUX
LINUX - HOW TO ADD A USER IN LINUX
Please find the command to add a user in linux:-
Command :- sudo useradd john
In the above example, we have created a user john.
Friday, 26 June 2020
DOCKER - HOW TO REMOVE A DOCKER IMAGE FROM OUR HOST
HOW TO REMOVE A DOCKER IMAGE FROM OUR HOST
In order to remove a docker image from our system:-
run the command :- docker rmi (Name of the Image)
In my example, I have deleted the image - docker/whalesay which I downloaded earlier.
Note:- Before deleting an image, please make sure that no container is using that image.
You need to stop and delete all the containers using this image, before deleting this image.
DOCKER - HOW TO SEE A LIST OF IMAGES PRESENT ON THE HOST
HOW TO SEE A LIST OF IMAGES PRESENT ON THE HOST
In order to see the list of all the docker images and their sizes, run the command - docker images
DOCKER - HOW TO REMOVE A CONTAINER PERMERANTLY
HOW TO REMOVE A CONTAINER PERMANENTLY
If we want to remove the docker container permanently,
run the command - docker rm (Provide the name of the container or ID)
In the below example, we see that we have 2 exited containers
Now we will delete the 2 exited comtainers:- flamboyant_hodgkin and sleepy_swirles
We can verify if the both the containers are deleted, by running
the command - docker ps -a
DOCKER - HOW TO STOP A RUNNING CONTAINER
HOW TO STOP A RUNNING CONTAINER
If we want to stop the running container running on our system,
run the command :- docker stop (Provide the container name or container id )
We can get the details of the container by running the command - docker ps -a
DOCKER - HOW TO SEE RUNNING DOCKER CONTAINERS
HOW TO SEE RUNNING DOCKER CONTAINERS
In order to list all the docker containers, run the command - docker ps
Now if we want to see the previous containers which may be stopped or exited, you need
to run the below command:- docker ps -a. Hence we see that we ran a previous container
by the name - whalesay.
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