How to Find / Search a file using CMD / Terminal Command Linux Ubuntu

1. Find file from computer using CMD / Terminal Command

sudo find / -name index.php

2. Find file from Specific Directory using CMD / Terminal Command

sudo find /var/www/html/ -name index.php

In PHP, Not send email in AWS amazon ubuntu linux server

sudo apt-get install sendmail

How to import Big SQL file usign PHP with shell command into hosting server

<?php

error_reporting(E_ALL ^ E_NOTICE);
ini_set('display_errors', 1);
ini_set('memory_limit', '512M');

$dbinfo = array(
    "host" => 'localhost',
    "user" => 'magentom_jaydip',
    "pass" => 'rmO22RQ%UbW0',
    "dbname" => 'magentom_jaydip'
);


// Database Config
$sqlhost = $dbinfo["host"];
$dbuser = $dbinfo["user"];
$dbpassword = $dbinfo["pass"];
$dbname = $dbinfo["dbname"];

// filename
$file = "mg_jaydip.sql";

shell_exec("mysql -u $dbuser --password='$dbpassword' --host='$sqlhost' $dbname < $file");

echo 'Finished!<br/>';
?>