execute shell script code example

Example 1: node execute shell commands

const { exec } = require("child_process");
exec("cat index.js", (error, data, getter) => {
	if(error){
		console.log("error",error.message);
		return;
	}
	if(getter){
		console.log("data",data);
		return;
	}
	console.log("data",data);

});

Example 2: how to run shell script

chmod +x <fileName>
./fileName.  # or use ->. bash fileName

Example 3: how to execute a bash script in terminal

$ chmod +x fileName
$ ./fileName

Example 4: how to run shell script

include 
#!/bin/bash (1st line inside yourfile.sh)

to run
./yourfile.sh

if you do not include that line
bash yourfile.sh

Example 5: how to run shell script

# method 1
chmod +x <filename>
./<filename>

# method 2
sh <filename>.sh

# method 3 (Only for bash script)
bash <filename>.sh