CODEWITHSUNDEEP
amazon-web-servicesamazon-s3
xtra
xtra

Reputation: 2352

AWS find max file size in S3 bucket

I want to find the size and name of the biggest file in my S3 bucket.

Currently I have:

aws s3api list-objects --bucket bucket-name --output json --query "[max(Contents[].Size), length(Contents[])]"

which does not allow me to see the name of the file.

I also have the command to list the details of all files on the bucket:

aws s3api list-object-versions --bucket bucket-name --query 'Versions[*].Size'

What command will give me the name and size of the largest file(s) on the S3 bucket?

Upvotes: 18

Views: 20903

Answers (3)

Sid Parekar
Sid Parekar

Reputation: 1

Here is what I did:

using ">" operator sent the output of your command to a sizes.txt file. Then searched the max size in that text file to find the corresponding filename.

steps:

touch sizes.txt
aws s3api list-object-versions --bucket bucket-name | jq -r '.Versions[] | "\(.Key)\t \(.Size)"' | sort -k2 -r -n > sizes.txt 
vi sizes.txt /"max_size_retrieved_from_command"

Upvotes: -5

sparrowt
sparrowt

Reputation: 2958

Using AWS CLI only, this will find the largest file:

aws s3api list-objects-v2 --bucket bucket-name --query "sort_by(Contents, &Size)[-1:]"

or to include non-current versions if applicable:

aws s3api list-object-versions --bucket bucket-name --query "sort_by(Versions[*], &Size)[-1:]"

Optional tweaks:

  • Replace -1 with -N to find the largest N files.
  • Include .[Key,Size] at the end of the --query to select only those fields.

Sadly I think the filtering is done client side because this downloaded 28 MB when run on a large bucket. However it is still a useful 1-liner despite not being quick.

Upvotes: 37

alecswan
alecswan

Reputation: 3680

The following should return the name and size of the largest file in the bucket "bucket-name".

aws s3api list-object-versions --bucket bucket-name | jq -r '.Versions[] | "\(.Key)\t \(.Size)"' | sort -k2 -r -n | head -1

The command above uses jq which you can install from https://stedolan.github.io/jq/download/

Upvotes: 6

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