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At any given time, a ring system typically has hundreds or sometimes even thousands of processes running

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simultaneously.

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It processes a simple a program that runs running and using resources.

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It includes a terminal web server and running commands.

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Any databases in the graphical user interface and much more.

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Any good Linux administrator, particularly a hacker, needs to understand how to manage the processor

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to optimize their systems.

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For example, once a hacker takes control of a target system, they might want to find and stop a certain

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processes, like an entourage application or firewall to do so.

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The hacker world first need to know how to find the processes.

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So the hacker might also want to set the scanning script to run periodically to find vulnerable systems.

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So we will also look at how to schedule such a script.

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So in this lecture, we will learn the many dos processes.

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So first, you will learn to weave and find processes and how to discover which processes are using

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the most resources.

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Then you will learn to manage persistence by running them in the background, prioritizing them and

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killing them if necessary, not loading well.

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So finally, you will learn to schedule the processes to run on specified dates and dates at any specific

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times, leaving processor processes.

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In most cases, the first step in managing processes is to leave.

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Word processors are running on your system.

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The primary primary tool for leaving processes and one of the Linux administrators best friend, is

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P as command here.

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So run it in your common line like me and to see what processes are active, the Linux kernel, the

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inner core of the operating system that controls nearly everything, assigns a unique process idea to

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each process sequentially as the processes are created.

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When working with these processes in Linux, you often need to specify their process.

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I this year.

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So, so it's so far more important to note that the Pearce's idea of the process than the name of this

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process or process idea is more important than the name of Perseus.

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So all along, the app is common, doesn't really provide you with much information.

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So running the command without any options lists the process has started said to be invoked by the currently

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logged in user in your case is Carly.

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Uh, so.

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And what processes are running on the terminal?

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So here it.

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Simple says that the base shell is open and running and what?

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We run the p as com month here.

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So we want to we want and need far more information than that particular Windows process, run by other

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users and by the system in the background.

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Without this information, we know very little to what is actually taking place on our system.

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So we're running the command with the options.

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Uh, Alex will show our processes running with the system for all users.

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See if it's run it p, I'll see it.

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So you can see here, we can see all the processes is running here and what process is which user and

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present.

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Say the old CPU is running these processes here, as you can see here.

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We have Carly and Reed here.

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So.

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Not that you don't prefix these options with a dash.

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So everything is in lower case because it is a case sensitive.

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As you can see, we have not other than a dash here, and everything is in a lower case.

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Because an index is case sensitive, using uppercase options will give significantly different results.

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As you can see the common now so many re processes that likely run off the bottom of your screen.

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So the first process is in it.

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Yes.

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So list in the final column here, the last person is the command.

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We ran to display.

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Our folks here, as you can see here and user, is there one of these Colligan, which is my user account

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here?

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You know, Linux.

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Many of the details and like here, um.

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Process idea, CPU time, uh, memory command and so on here may be different on your system, but should

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have the same format for our purposes.

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Here are the most important columns in this output.

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So the user is the user for in the process process.

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It is, as you know, as we discussed earlier, this is the process CPU them is them at the present

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of the CPU.

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This process is using, uh, so memory here is the present of memory this process is using, and the

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command is the name of the command that started the process in general to perform any action in a process.

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We must specify the process idea.

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So let's see.

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You have to use these identifiers to our advantage here.

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So.

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Filtering by process name.

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I want look at those pictures.

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Yes, see.

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So actually in this in this picture, we will do it.

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So I am waiting you in this section.