GREP is quite a powerful, yet simple tool for searching text. Docker has lots of text that can be searched when using Docker commands such as docker inspect. Using this command can return a lot of text on your screen. While this can be useful, why hurt your eyes looking for simple network information on a particular container? Enter GREP.
In this example, I'm looking for just the name of the container, it's IP address(es) and MAC address(es).
docker network inspect 4136d04999bc | grep 'Name\|IPv4Address\|MacAddress'
As you can see, I use the command docker network inspect [containerID] and pipe that text to the GREP utility which allows me to search for the regular expression.
You should see something similar to the following:
|docker network inspect + GREP|
The above is plain text but since you can do so much with regular expressions, there isn't much you can't find using this example as a starting point.
For more information on using GREP and regular expressions as well as Docker networking, visit the following sites:
Grep - An introduction to grep and egrep. How to search for strings inside of files.
Docker - Work with network commands