1# see images available on your hosts
 2docker image list
 3
 4# equal to above
 5docker images
 6REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
 7httpd               latest              6fa26f20557b        45 hours ago        164MB
 8hello-world         latest              75280d40a50b        4 months ago        1.69kB
 9
10# give sha
11docker images --no-trunc=true
12
13# delete unused images 
14docker rmi $(docker images -q)    
15# delete images without tags
16docker rmi $(docker images | grep "^<none>" | awk '{print $3}')