exists in std::fs - Rust
Description: Returns `Ok(true)` if the path points at an existing entity.

## exists

# Function exists

1.81.0 · Source

    pub fn exists<P: AsRef<Path>>(path: P) -> Result<bool>

Expand description

Returns `Ok(true)` if the path points at an existing entity.

This function will traverse symbolic links to query information about the destination file. In case of broken symbolic links this will return `Ok(false)`.

As opposed to the `Path::exists` method, this will only return `Ok(true)` or `Ok(false)` if the path was verified to exist or not exist. If its existence can neither be confirmed nor denied, an `Err(_)` will be propagated instead. This can be the case if e.g. listing permission is denied on one of the parent directories.

Note that while this avoids some pitfalls of the `exists()` method, it still can not prevent time-of-check to time-of-use (TOCTOU) bugs. You should only use it in scenarios where those bugs are not an issue.

## §Examples

    use std::fs;

    assert!(!fs::exists("does_not_exist.txt").expect("Can't check existence of file does_not_exist.txt"));
    assert!(fs::exists("/root/secret_file.txt").is_err());