terraform/website/source/docs/commands/refresh.html.markdown

---
layout: "docs"
page_title: "Command: refresh"
sidebar_current: "docs-commands-refresh"
---

# Command: refresh

The `terraform refresh` command is used to reconcile the state Terraform
knows about (via its state file) with the real-world infrastructure.
This can be used to detect any drift from the last-known state, and to
update the state file.

This does not modify infrastructure, but does modify the state file.
If the state is changed, this may cause changes to occur during the next
plan or apply.

## Usage

Usage: `terraform refresh [options] [dir]`

By default, `refresh` requires no flags and looks in the current directory
for the configuration and state file to refresh.

The command-line flags are all optional. The list of available flags are:

* `-backup=path` - Path to the backup file. Defaults to `-state-out` with
  the ".backup" extension. Disabled by setting to "-".

* `-no-color` - Disables output with coloring

* `-state=path` - Path to read and write the state file to. Defaults to "terraform.tfstate".

* `-state-out=path` - Path to write updated state file. By default, the
  `-state` path will be used.

* `-var 'foo=bar'` - Set a variable in the Terraform configuration. This
  flag can be set multiple times.

* `-var-file=foo` - Set variables in the Terraform configuration from
   a file. If "terraform.tfvars" is present, it will be automatically
   loaded if this flag is not specified.