childprocess exec open terminal code example
Example 1: node run shell command
// You can use 'exec' this way
const { exec } = require("child_process");
exec("ls -la", (error, stdout, stderr) => {
if (error) {
console.log(`error: ${error.message}`);
return;
}
if (stderr) {
console.log(`stderr: ${stderr}`);
return;
}
console.log(`stdout: ${stdout}`);
});
Example 2: electron js execute command
//Uses node.js process manager
const electron = require('electron');
const child_process = require('child_process');
const dialog = electron.dialog;
// This function will output the lines from the script
// and will return the full combined output
// as well as exit code when it's done (using the callback).
function run_script(command, args, callback) {
var child = child_process.spawn(command, args, {
encoding: 'utf8',
shell: true
});
// You can also use a variable to save the output for when the script closes later
child.on('error', (error) => {
dialog.showMessageBox({
title: 'Title',
type: 'warning',
message: 'Error occured.\r\n' + error
});
});
child.stdout.setEncoding('utf8');
child.stdout.on('data', (data) => {
//Here is the output
data=data.toString();
console.log(data);
});
child.stderr.setEncoding('utf8');
child.stderr.on('data', (data) => {
// Return some data to the renderer process with the mainprocess-response ID
mainWindow.webContents.send('mainprocess-response', data);
//Here is the output from the command
console.log(data);
});
child.on('close', (code) => {
//Here you can get the exit code of the script
switch (code) {
case 0:
dialog.showMessageBox({
title: 'Title',
type: 'info',
message: 'End process.\r\n'
});
break;
}
});
if (typeof callback === 'function')
callback();
}