How to realize Field extraction by Docker Image in Linux
This article mainly introduces the Linux Docker image how to achieve field extraction, the article is very detailed, has a certain reference value, interested friends must read it!
Field extraction
Next, extract the container ID column, which is pediatric for awk:
$docker images | grep none | awk'{print $3}'
Of course, you can get the same result by segmenting fields with the cut command. Because cut can only be segmented by a single character, and there are multiple spaces in the original text, text replacement is required first.
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