std::env

Status: experimental

Process environment, command-line arguments, working directory.

API details and source

The implementation source contains the complete declarations and implementation notes. The table below lists canonical Gossamer call signatures; every item name links directly to its implementation file.

Item	Canonical signature or declaration	Description
args	fn args() -> Vec<String>	Returns the program's command-line arguments.
current_dir	fn current_dir() -> Result<String, io::Error>	Returns the current working directory.
home_dir	fn home_dir() -> Option<String>	Returns the calling user's home directory if known.
program_name	fn program_name() -> String	Returns the path used to invoke the program (argv[0]).
set_current_dir	fn set_current_dir(path: String) -> Result<(), io::Error>	Changes the current working directory.
set_var	fn set_var(name: String, value: String) -> ()	Sets an environment variable in the current process.
temp_dir	fn temp_dir() -> String	Returns the system's temporary directory.
unset_var	fn unset_var(name: String) -> ()	Removes an environment variable from the current process.
var	fn var(name: String) -> Option<String>	Returns the value of an environment variable.