| --- |
| page_title: trimprefix - Functions - Configuration Language |
| description: |- |
| The trimprefix function removes the specified prefix from the start of a |
| given string. |
| --- |
| |
| # `trimprefix` Function |
| |
| `trimprefix` removes the specified prefix from the start of the given string, but only once. If the string does not begin with the prefix, the original string is returned unchanged. |
| |
| ## Examples |
| |
| ``` |
| > trimprefix("helloworld", "hello") |
| world |
| ``` |
| |
| ``` |
| > trimprefix("helloworld", "cat") |
| helloworld |
| ``` |
| |
| ``` |
| > trimprefix("--hello", "-") |
| -hello |
| ``` |
| |
| ## Related Functions |
| |
| * [`trim`](/terraform/language/functions/trim) removes characters at the start and end of a string. |
| * [`trimsuffix`](/terraform/language/functions/trimsuffix) removes a word from the end of a string. |
| * [`trimspace`](/terraform/language/functions/trimspace) removes all types of whitespace from |
| both the start and the end of a string. |
