Function std::env::join_paths

pub fn join_paths<I, T>(paths: I) -> Result<OsString, JoinPathsError> where I: IntoIterator<Item=T>, T: AsRef<OsStr>

Joins a collection of Paths appropriately for the PATH environment variable.

Returns an OsString on success.

Returns an Err (containing an error message) if one of the input Paths contains an invalid character for constructing the PATH variable (a double quote on Windows or a colon on Unix).

Examples

use std::env;
use std::path::PathBuf;

if let Some(path) = env::var_os("PATH") {
    let mut paths = env::split_paths(&path).collect::<Vec<_>>();
    paths.push(PathBuf::from("/home/xyz/bin"));
    let new_path = env::join_paths(paths).unwrap();
    env::set_var("PATH", &new_path);
}