terraform/website/docs/configuration/functions/trimprefix.html.md

---
layout: "language"
page_title: "trimprefix - Functions - Configuration Language"
sidebar_current: "docs-funcs-string-trimprefix"
description: |-
  The trimprefix function removes the specified prefix from the start of a
  given string.
---

# `trimprefix` Function

-> **Note:** This page is about Terraform 0.12 and later. For Terraform 0.11 and
earlier, see
[0.11 Configuration Language: Interpolation Syntax](../../configuration-0-11/interpolation.html).

`trimprefix` removes the specified prefix from the start of the given string. If the string does not start with the prefix, the string is returned unchanged.

## Examples

```
> trimprefix("helloworld", "hello")
world
```

```
> trimprefix("helloworld", "cat")
helloworld
```

## Related Functions

* [`trim`](./trim.html) removes characters at the start and end of a string.
* [`trimsuffix`](./trimsuffix.html) removes a word from the end of a string.
* [`trimspace`](./trimspace.html) removes all types of whitespace from
  both the start and the end of a string.