awk使用示例

一、场景示例

使用docker命令查询出指定的docker镜像然后删除

镜像如下

➜ docker images
REPOSITORY                       TAG                 IMAGE ID            CREATED             SIZE
119.23.231.80/town-test/config   latest              589f5f9614f1        27 hours ago        552MB
aaa                              latest              589f5f9614f1        27 hours ago        552MB
119.23.231.80/town_test/config   latest              bac4554361d7        27 hours ago        552MB
redmine                          latest              887149aec1cd        2 weeks ago         663MB
kingboy/redis                    4                   c5355f8853e4        4 weeks ago         107MB
kingboy/nginx                    1.13                7f70b30f2cc6        5 weeks ago         109MB
119.23.231.80/library/openjdk    8-jre               1b56aa0fd38c        5 weeks ago         527MB
kingboy/openjdk                  8-jre               1b56aa0fd38c        5 weeks ago         527MB
kingboy/rabbitmq                 3.7-management      df0ee1f2343b        6 weeks ago         151MB
kingboy/mysql                    5.6                 079344ce5ebd        6 weeks ago         256MB
kingboy/zookeeper                3.5                 21141b14d33e        3 months ago        127MB

二、删除指定镜像

删除所有名字包含119.23.231.80的镜像，

docker删除命令为docker rmi REPOSITORY:TAG

首先查询出所有符合条件的镜像

docker images|grep 119.23.231.80

在这基础上使用awk命令将repository和tag使用冒号拼接

docker images|grep 119.23.231.80|awk '{print $1":"$2}'

然后删除之

docker images|grep 119.23.231.80|awk '{print $1":"$2}'|xargs docker rmi