How to use Command::new() to get information from OS cmd?

1

I wanna check whether "notepad.exe" is running, using below code but no expected result appeared, how ot use this Command::new() ?

use std::process::Command;

fn main(){
    let output = if cfg!(target_os = "windows") {
        println!("win");
        Command::new("tasklist")
                .arg("/FI")
                .arg("IMAGENAME")
                .arg("eq")
                .arg("notepad.exe")
                .output()
                .expect("failed to execute process")
    } else {
       // just ignore linux. i dont need this part,
    };
    let hello = output.stdout;
    println!("{:?}", &hello);
    let output_str = String::from_utf8_lossy(&hello);
    println!("{:?}", output_str);
}
2

original code running in cmd in windows as below, I want to put it into rust,

tasklist /FI "IMAGENAME eq notepad.exe"
3

the quoted string is passed as one argument instead of tree, so the equivalent is:

Command::new("tasklist")
                .arg("/FI")
                .arg("IMAGENAME eq notepad.exe")
                .output()
                .expect("failed to execute process")
4

I revised as below but still no feedback,

use std::process::Command;

fn main(){
    let output = Command::new("cmd")
                            .arg("tasklist /FI \"IMAGENAME eq notepad.exe\"")
                            .output()
                            .expect("failed to execute process");
    let h = output.stdout;

    println!("{:?}", h);
    let output_str = String::from_utf8_lossy(&h);
    println!("{:?}", output_str);
}
5

oh my, don't play quotes with cmd, it's not worth it. try this:

Command::new("cmd")
	.arg("/S")
	.arg("/c")
	.arg("tasklist")
	.arg("/FI")
	.arg("IMAGENAME eq notepad.exe")
	.output()
	.expect("failed to execute process")
1 Like
6

highly appreciated, thanks..