bash commands in node

1const { exec } = require("child_process");
2exec("cat index.js", (error, data, getter) => {
3	if(error){
4		console.log("error",error.message);
5		return;
6	}
7	if(getter){
8		console.log("data",data);
9		return;
10	}
11	console.log("data",data);
12
13});
14

1// You can use 'exec' this way
2// LINUX EXAMPLE
3
4const { exec } = require("child_process");
5
6exec("ls -la", (error, stdout, stderr) => {
7    if (error) {
8        console.log(`error: ${error.message}`);
9        return;
10    }
11    if (stderr) {
12        console.log(`stderr: ${stderr}`);
13        return;
14    }
15    console.log(`stdout: ${stdout}`);
16});

1const { exec } = require('child_process');
2exec('ls | grep js', (err, stdout, stderr) => {  
3  if (err) {    
4    //some err occurred    
5    console.error(err)  
6  } else {   
7    // the *entire* stdout and stderr (buffered)   
8    console.log(`stdout: ${stdout}`);   
9    console.log(`stderr: ${stderr}`);  
10  }
11});