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Hi.

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And welcome back to this video.

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So in this lesson, we are going to see some performance monitoring and statistics command of our Linux

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operating system.

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To begin with.

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We are going to see the first command, which is top.

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When I hit Enter, you will be able to see and manage the top processes which are been running into

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your system.

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As you can see, the PID, which is the process ID, the user which is running the process and the command

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which has been run.

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As you can see over here, all these commands are system commands which are been running.

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Now to come out of this, you simply have to press the button, which is Q Which means quit.

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Perfect, let's move on.

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And now you can use a similar command, which is each top.

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Now this command is the alternative to top command.

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And when you hit top and hit enter, you can see interactive processes viewer which means the processes

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that are being running currently and are being interacted, you will be able to see everything over

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here.

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It gives a very good overview of the current memory and the process that are being running perfect.

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If you want to come out of this as well, hit queue.

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Now if you want to display the processor related statistics and want to know more information about

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the processor, simply type MP stack space one and hit enter and you will be able to see the details

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about your processor over here.

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As you can see, this is the output of the CPU, as you can see over here.

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Perfect.

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If you want to come out of this, simply press control.

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See, now, if you want to display the virtual memory and information about it, simply type VM Stat

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Space one and hit enter.

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And over here you will be able to see enough information about the virtual memory that has been running

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into your operating system.

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Similarly, if you want to know the I-O statistics about the computer, you can simply type IO stat

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space one and hit enter and you will be able to see the input output statistics of this computer, the

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devices that are being collected, the devices which are being connected to the system and its IOC stats.

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Perfect.

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Let's move ahead.

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And now let me just clear the screen for you.

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Now, if you want to display the last 100 system log messages, which can also be seen using the command,

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which is.

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Get space.

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What log?

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And syslog and hit enter.

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Now here you can see these are all the system log messages that has happened into this computer.

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If you want only the last ten or last 20, you can simply type tale hyphen ten because you want to see

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the last ten messages and then hit enter.

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And you can see these are the last ten system log that has happened into your computer.