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README.md

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+# tflock
+
+Lock your Terraform state manually.
+
+# Why
+
+Terraform has a state lock mechanism and it works automatically. Nevertheless, I found it's useful to lock state manually when I don't want team members to touch code during refactorings of Terraform configurations.
+Terraform has the `terraform force-unlock` command for when somthing goes wrong, and it doesn't provide the `terraform lock` command. It seems that this decision was by design. Not all backend types can acquire explicit lock. For more details, see https://github.com/hashicorp/terraform/issues/17203
+
+But I want `terraform lock` command!
+
+# Features
+
+- Lock your Terraform state manually.
+
+That's all.
+
+I'm testing in Terraform 0.12 + backend type s3 (lock with dynamodb).
+Other backend types may or may not work.
+
+# Install
+
+Required: Go 1.13+.
+
+```
+$ go get github.com/minamijoyo/tflock
+```
+
+# License
+MIT