How to find out running linux process?

Question

linux

Hello!
In the console I enter the command:
ps aux | grep upload
In the answer I get the following:

root       459  0.0  0.5 428524 35168 ?        Ss   06:40   0:00 /usr/bin/php upload.php
root       460  0.0  0.5 428792 35384 ?        Ss   08:32   0:00 /usr/bin/php upload.php
root       880  0.0  0.5 428792 35384 ?        Ss   08:33   0:00 /usr/bin/php upload.php
root       897  0.0  0.5 428784 35504 ?        Ss   04:25   0:00 /usr/bin/php upload.php
root       915  0.0  0.5 428524 35164 ?        Ss   06:42   0:00 /usr/bin/php upload.php
root      1403  0.0  0.5 428524 35128 ?        Ss   06:20   0:00 /usr/bin/php upload.php
root      1516  0.0  0.5 428524 35168 ?        Ss   06:44   0:00 /usr/bin/php upload.php
root      1766  0.0  0.5 428524 35160 ?        Ss   06:45   0:00 /usr/bin/php upload.php
root      1911  0.0  0.5 428792 35384 ?        Ss   08:36   0:00 /usr/bin/php upload.php
root      2280  0.0  0.5 428524 35160 ?        Ss   06:47   0:00 /usr/bin/php upload.php
root      2298  0.0  0.5 428792 35388 ?        Ss   08:37   0:00 /usr/bin/php upload.php
root      2386  0.0  0.5 429296 35420 ?        Ss   04:00   0:00 /usr/bin/php upload.php
root      2581  0.0  0.5 428792 35400 ?        Ss   08:38   0:00 /usr/bin/php upload.php
root      2725  0.0  0.5 428524 35160 ?        Ss   06:49   0:00 /usr/bin/php upload.php
root      2974  0.0  0.5 428796 35432 ?        Ss   08:39   0:00 /usr/bin/php upload.php
root      2985  0.0  0.5 428524 35132 ?        Ss   06:21   0:00 /usr/bin/php upload.php
root      3221  0.0  0.5 428796 35544 ?        Ss   08:40   0:00 /usr/bin/php upload.php
root      3404  0.0  0.5 428784 35372 ?        Ss   04:01   0:00 /usr/bin/php upload.php
root      3407  0.0  0.5 428524 35156 ?        Ss   06:51   0:00 /usr/bin/php upload.php

How to understand it? Are all these processes running or have they been started?
And if they were running, how can I see the active ones?

Answer 1

The question is not clear. All these processes have been launched and are working. At the time of the command execution, all of them were in the event waiting mode (sleeping).

Answer 2

All these processes are running, running, each of them is the leader of its session (s) - that is, none of them has launched the other. And all of them are in the state of waiting for the completion of the event (S) - they are waiting for something, an answer to a question, for example...