Download lots of s3 files at once golang

Note - If you are wondering, let me tell you that you do not need to specify any region in the below commands. To download the files as per your requirements, you can use the following command -.

To download the files one from the images folder in s3 and the other not in any folder from the bucket that I created, the following command can be used -. And then we include the two files from the excluded files. Let us say we have three files in our bucket, file1, file2, and file3. And then with the help of include, we can include the files which we want to download.

Example - --include "file1" will include the file1. To download the entire bucket, use the below command -. The above command downloads all the files from the bucket you specified in the local folder. As you may have noticed, we have used sync or cp in the above commands.

Just for your knowledge, the difference between the sync and cp is that the sync option syncs your bucket with the local folder whereas the cp command copies the objects you specified to the local folder. For our purpose to download files from s3 we can use either one of sync or cp. I believe this post helped you solve your problem. I hope you got what you were looking for and you learned something valuable. If you found this post helpful, please subscribe to my newsletter by filling the form below.

It would not take more than 7 seconds. Your support motivates me to write more and more helpful posts. Take a look at the picture, you see the word "FAIL". Yeah, this is the result of my first attempt at Without getting into too many details, let us first take a quick look at what may be the mistake tha NoCredentialProviders: no valid providers in chain. For verbose messaging see aws. The documentation does not specifically say how to set the credentials.

Access key ID,Secret access key. There are several ways to set credentials. NewEnvCredentials as part of session. NewSession - what you did is perfect :. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?

Collectives on Stack Overflow. Learn more. Asked 2 years, 10 months ago. Active 1 year, 4 months ago. Viewed 11k times. I am writing a go function to download a file from AWS S3 bucket. We're a place where coders share, stay up-to-date and grow their careers. Connecting your Go application with Amazon S3 is pretty easy and requires only a few lines of code.

But if you have no experience with Amazon Web Services, it can get pretty tricky at the beginning to figure out even the most straightforward task. We are going to see here how to connect to S3 with Golang, upload a file from a form to an S3 bucket, download it, and list all items saved on this bucket.

I am not going to explain those things here since there are already plenty of good tutorials on the Internet about it. After having created the S3 Bucket, the very first thing that we are going to do is to save the credentials.

We are going to use the easiest one using a shared credential file. I like to use this code on my main. There are plenty of tutorials on internet, but not all of them are updated or following the best practices. I would recommend you to check those links:. Are you sure you want to hide this comment?