# Commands

### Image

1. List all docker images

```bash
$ docker images
```

2\. List only those images who has `none` substring in information

```bash
$ docker images | grep none
```

3\. Print ID (3rd field) of the docker images who has `none` substring in their info.

```bash
$ docker images | grep none | awk '{print $3}'
```

4\. Remove the images who has `none` substring in their information.

```bash
$ docker rmi -f (docker images | grep none | awk '{print $3}')
```

5\. Free disk taken by docker images, volume etc.<br>

```bash
docker system prune --all
```


---

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