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SSH: How to stop a script running in the background?

  1. Open/Login SSH into the server
  2. Type in ps x
  3. See the list of processes currently on your server
  4. Get the PID(process id) from that list and type kill xxxxx
  5. That should do it.

Source: StackOverflow
Tested on Linux / CentOS 6.7 x 64

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PHP: How to run / execute a script in the background forever through SSH ?

You can execute a php script in the background forever by using SSH through PHP but for that you have to make sure first that SSH2 extension is available.

PHP DOCS: http://www.php.net/manual/en/function.ssh2-exec.php

$connection = ssh2_connect('shell.example.com', 22);
ssh2_auth_password($connection, 'username', 'password');

/* if you want to execute script from a different directory then use commands in same line separated 
   by ';', that is required in php.
   In below second command '&' will do the magic to run command forever.
*/ 
$stream = ssh2_exec($connection, 'cd httpdocs/subdir/dir; /path/to/php server.php &'); 
$stream = ssh2_exec($connection, 'ps aux | grep server.php'); 

// printing ssh output on screen
stream_set_blocking($stream, true);
$stream_out = ssh2_fetch_stream($stream, SSH2_STREAM_STDIO);
echo stream_get_contents($stream_out); 
// closing ssh connection
$stream = ssh2_exec($connection, 'exit'); 
unset($connection);

If you want to do same thing through SSH Terminal (PuTTY) then follow this tutorial:
SSH: how to run a PHP script in background forever in Linux (CentOS) ?

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CentOS: how to execute a php file with different php version than the php version of OS

To execute a php file with different php version than the version installed on the main php of your Server follow this:

You should know that where is that php version located so that you can add the path.

In my case I want to use PHP 7 that is installed in the plesk hosting panel folder so I’ll run following command:

 /opt/plesk/php/7.0/bin/php server.php

In above code server.php is the file which we want to execute. Just enter above command in the ssh terminal and it will execute successfully.

If your php is located in some other location then get that path and run in the same manner as I did above.

Testing Environment:

OS: CentOS 6.7 x 64