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[Intro Music]

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In the previous few lectures, we

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have talked about commands and

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I have explained to you what is

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difference between options and

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arguments. And of course, you could

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use multiple options and multiple

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arguments in every single command.

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In order to find out which options

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are supported by a specific

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command, you need to enter either

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'man', and command; or command, and

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'--help' option. In such case, you

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will see a list of all available

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options you're able to use. Also,

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you could find out which arguments

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are mandatory and which are

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optional. All right, now let's

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proceed, and let me now talk about

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processes. And you'll understand

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that basically, when you enter each

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command, you start specific

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process. And there are different

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processes. There are processes that

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simply quickly start, and afterwards

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they're stopped. For example, when

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you enter 'ls' or 'mkdir' command,

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you start corresponding 'ls' or 'mkdir'

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process, and those processes do

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their job and afterwards, they

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simply stop. Also, there are so

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called long running processes like

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'bash' shell process or 'sh' shell

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process and so on. I'll talk about

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all of that in this and next lectures.

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Let's get started.

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