node.js how to check a process is running by the process name?

Question

i run node.js in linux, from node.js how to check if a process is running from the process name ? Worst case i use child_process, but wonder if better ways ?

Thanks

Answer 1

A little improvement of code answered by d_scalzi. Function with callback instead of promises, with only one variable query and with switch instead of if/else.

const exec = require('child_process').exec;

const isRunning = (query, cb) => {
    let platform = process.platform;
    let cmd = '';
    switch (platform) {
        case 'win32' : cmd = `tasklist`; break;
        case 'darwin' : cmd = `ps -ax | grep ${query}`; break;
        case 'linux' : cmd = `ps -A`; break;
        default: break;
    }
    exec(cmd, (err, stdout, stderr) => {
        cb(stdout.toLowerCase().indexOf(query.toLowerCase()) > -1);
    });
}

isRunning('chrome.exe', (status) => {
    console.log(status); // true|false
})