Struct std::process::ExitStatus
1.0.0·
source[−]pub struct ExitStatus(_);
Expand description
Describes the result of a process after it has terminated.
This struct
is used to represent the exit status or other termination of a child process.
Child processes are created via the Command
struct and their exit
status is exposed through the status
method, or the wait
method
of a Child
process.
An ExitStatus
represents every possible disposition of a process. On Unix this
is the wait status. It is not simply an exit status (a value passed to exit
).
For proper error reporting of failed processes, print the value of ExitStatus
or
ExitStatusError
using their implementations of Display
.
Implementations
Was termination successful? Returns a Result
.
Examples
#![feature(exit_status_error)]
use std::process::Command;
let status = Command::new("ls")
.arg("/dev/nonexistent")
.status()
.expect("ls could not be executed");
println!("ls: {}", status);
status.exit_ok().expect_err("/dev/nonexistent could be listed!");
RunWas termination successful? Signal termination is not considered a success, and success is defined as a zero exit status.
Examples
use std::process::Command;
let status = Command::new("mkdir")
.arg("projects")
.status()
.expect("failed to execute mkdir");
if status.success() {
println!("'projects/' directory created");
} else {
println!("failed to create 'projects/' directory: {}", status);
}
RunReturns the exit code of the process, if any.
In Unix terms the return value is the exit status: the value passed to exit
, if the
process finished by calling exit
. Note that on Unix the exit status is truncated to 8
bits, and that values that didn’t come from a program’s call to exit
may be invented by the
runtime system (often, for example, 255, 254, 127 or 126).
On Unix, this will return None
if the process was terminated by a signal.
ExitStatusExt
is an
extension trait for extracting any such signal, and other details, from the ExitStatus
.
Examples
use std::process::Command;
let status = Command::new("mkdir")
.arg("projects")
.status()
.expect("failed to execute mkdir");
match status.code() {
Some(code) => println!("Exited with status code: {}", code),
None => println!("Process terminated by signal")
}
RunTrait Implementations
Creates a new ExitStatus
or ExitStatusError
from the raw underlying integer status
value from wait
Read more
If the process was terminated by a signal, returns that signal. Read more
If the process was terminated by a signal, says whether it dumped core.
If the process was stopped by a signal, returns that signal. Read more
Performs the conversion.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.