Add List RDS Snapshots With Matching Identifier Prefix as an AWS TIL

README.md

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 - [AWS CLI Requires Groff Executable](aws/aws-cli-requires-groff-executable.md)
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+- [List RDS Snapshots With Matching Identifier Prefix](aws/list-rds-snapshots-with-matching-identifier-prefix.md)
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aws/list-rds-snapshots-with-matching-identifier-prefix.md

@@ -0,0 +1,29 @@
+# List RDS Snapshots With Matching Identifier Prefix
+
+I'm working on a script that manually creates a snapshot which it will then
+restore to a temporary database that I can scrub and dump. The snapshots that
+this script takes are _manual_ and they are named with identifiers that have a
+defining prefix (`dev-snapshot-`). Besides the few snapshots created by this
+script, there are tons of automated snapshots that RDS creates for
+backup/recovery purposes.
+
+I want to list any snapshots that have been created by the script. I can do
+this with the `describe-db-snapshots` command and some filters.
+
+```bash
+$ aws rds describe-db-snapshots \
+  --snapshot-type manual \
+  --query "DBSnapshots[?starts_with(DBSnapshotIdentifier, 'dev-snapshot-')].DBSnapshotIdentifier" \
+  --no-cli-pager
+
+[
+    "dev-snapshot-20250327-155355"
+]
+```
+
+There are two key pieces. The `--snapshot-type manual` filter excludes all
+those automated snapshots. The `--query` both filters to any snapshots whose
+identifier `?starts_with` the prefix `dev-snapshot-` and then refines the
+output to just the `DBSnapshotIdentifier` instead of the entire JSON object.
+
+[source](https://docs.aws.amazon.com/cli/latest/reference/rds/describe-db-snapshots.html)