find the path of a file in rust

To find the path of a file in Rust, you need to use the std::path::PathBuf and std::fs::canonicalize() functions. The PathBuf is a struct that represents a path on the file system, and canonicalize() returns the canonicalized absolute path of the given PathBuf.

Here's an example code that finds the path of a file named example.txt in the current directory:

main.rs
use std::path::PathBuf;
use std::fs;

fn main() {
    let filename = "example.txt";
    let path = PathBuf::from(filename);
    match fs::canonicalize(path) {
        Ok(full_path) => println!("Full path of {}: {:?}", filename, full_path),
        Err(e) => println!("Error finding path for {}: {}", filename, e),
    }
}
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In this code, we first create a PathBuf from the filename example.txt. Then, we try to find the full path of the file using fs::canonicalize() function. If canonicalize() returns Ok, we print the full path. Otherwise, we print the error.