Create presigned URLs using AWS CLI

docs/notes/infrastructure/aws-presigned-urls-cli.md

@@ -0,0 +1,19 @@
+---
+title: Create presigned URLs using AWS CLI
+tags:
+  - AWS
+sources:
+  - https://docs.aws.amazon.com/cli/latest/reference/s3/presign.html
+---
+
+Sometimes, you only have access to the `aws` CLI, and need to generate presigned URLs to S3 objects.
+
+The `aws s3 presign` command will do this, creating URLs signed as the currently-authenticated user.
+
+```bash
+export AWS_ACCESS_KEY_ID=xxx AWS_SECRET_ACCESS_KEY=xxx
+aws s3 presign --expires-in 3600 s3://my-bucket/file.txt
+```
+
+!!! note
+    URLs are signed with a region of `us-east-1`. Pass `--region` or set `$AWS_REGION` to override. URLs with the wrong region are not valid.