筛选S3列表对象结果以找到与模式匹配的键 [英] Filter S3 list-objects results to find a key matching a pattern

问题描述

我想使用AWS CLI查询存储桶的内容，查看是否存在特定文件，但是存储桶包含数千个文件.如何过滤结果以仅显示与模式匹配的键名?例如:

aws s3api list-objects --bucket myBucketName --query "Contents[?Key==*mySearchPattern*]"

解决方案

--query参数使用JMESPath表达式. JMESPath具有内部功能contains ，该功能可让您搜索字符串模式.

这应该得到预期的结果:

aws s3api list-objects --bucket myBucketName --query "Contents[?contains(Key, `mySearchPattern`)]"

(在Linux中，我需要使用单引号'，而不是在mySearchPattern周围使用反引号`.)

如果要搜索带有某些字符的键开头，还可以使用--prefix参数:

aws s3api list-objects --bucket myBucketName --prefix "myPrefixToSearchFor"

I would like to use the AWS CLI to query the contents of a bucket and see if a particular file exists, but the bucket contains thousands of files. How can I filter the results to only show key names that match a pattern? For example:

aws s3api list-objects --bucket myBucketName --query "Contents[?Key==*mySearchPattern*]"

解决方案

The --query argument uses JMESPath expressions. JMESPath has an internal function contains that allows you to search for a string pattern.

This should give the desired results:

aws s3api list-objects --bucket myBucketName --query "Contents[?contains(Key, `mySearchPattern`)]"

(With Linux I needed to use single quotes ' rather than back ticks ` around mySearchPattern.)

If you want to search for keys starting with certain characters, you can also use the --prefix argument:

aws s3api list-objects --bucket myBucketName --prefix "myPrefixToSearchFor"

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