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Hello everyone.

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In this demo, I'm going to show you how to use the find command.

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Find command searches for lists, files and directories.

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I also can use conditions with find command.

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For example, I can use names, file type size users, groups, permissions and so on.

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Let's apply some examples to show how to use the find command.

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First, I'm going to type find.

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Then I would like to type from where to start the search.

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So in this case I would like to type dot, which means I would like to start the search from this current

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working directory.

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So the current working directory is the slash route.

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Then type.

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That's the type that like the type either files or directories that I would like to to do the search.

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So in this example, I would like to do the search for files.

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Then I hit enter.

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As you can see here, we get all the files under this current working directory.

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If I would like to do another example, same thing I will do this time under Slash home.

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So I would like to start the search from slash home.

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Then the type directory hit enter.

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So as we can see here, we got all the directories under the slash home.

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If I would like to find all the text files using the option dash name.

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So let's do that.

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I'm going to do the search from the current working directory, then the name, then the name.

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I would like to mention what exactly I'm going to search, so I'm going to search for the dot txt.

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So I'm going to as we can see here, I'm going to look for all the names.

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It doesn't matter uppercase lowercase because we wrote here the star.

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Then that d t.

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So this is the extension that I would like to look for all the files that has the extension txt.

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As you can see here I have to type the star dot txt under quotation mark.

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Then I hit enter.

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As we can see here, we got all the files.

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It doesn't matter.

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We didn't in this case we didn't mention the type because we already said that we would like to get

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all the files or the text files under the current working directory.

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If I would like to do the ignorecase, let's see if we do have for example, we don't.

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I'm going to first I'm going to create two directories.

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So as we can see here, it's lowercase.

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Then here I'm going to do this uppercase and I hit enter.

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As you can see here, we have two directories.

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Now, if I would like to do the search in this current working directory and.

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Dash name then.

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Dir.

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Dir.

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And we will hit enter.

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So as we can see here, we got one output.

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However, if I would do the dash I name, so I name means that it's ignoring case so it's going to ignore

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either uppercase or lowercase.

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I hit enter as we can see here.

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We got what?

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Two outcomes.

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So because we added the I here, so it is the ignoring case.

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So it doesn't matter if it's uppercase or lowercase.

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Now if I would like to use the dash delete to delete this directory.

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So first I'm going to find.

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Dot the current working directory I name before I'm going to do that.

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lSl So what I'm going to do here, I'm going to delete these two directories.

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So find then dot, then I name, then dir, then I'm going to add another option here.

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Dash, delete and hit enter lSl.

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As we can see here, we don't have these two directories anymore.

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If I would like to use the option here under under under home, I'm going to do option dash size, so

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I'm going to look.

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For doesn't matter file or directories under the slash home.

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The working directory here.

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The slash home.

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Then I'm going to say, for example, 20 Mega.

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So I'm going to look for all five directories that has the size 20 mega.

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I hit enter.

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We didn't get any outcome.

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However, I can change the search from where I can start, so I'm going to start from the top.

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From the top level, from the root directory or the root file system and hit enter and wait for a bit.

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As we can see here, we got all the out, all the files and directories that has size 20.

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Now let's move on if I would like to use another option.

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So we're going to do here the current working directory first, then the type I'm going to do file.

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Then.

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Dash So in this case, in this example, I'm going to use the permission.

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So this is the short for permission, dash perm.

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So then I'm going to type the permission.

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066.

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We will talk more about the permissions and the file ownership and permission levels in the next level,

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in the next chapter when we're going to explain more about how we can use these permissions hit enter.

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We didn't get an outcome.

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However, I can start from the top level.

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I hit enter.

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As we can see over here, we got all the files and directories that has the permission.

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066, six.

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And now we're going to do the example about how we can use the users so clear find I'm going to start

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here and this current working directory then type.

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I'm going to do directory this time, then dash user.

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So I'm going to look for all the directories that belongs to this user.

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So the user student and I hit enter didn't get anything.

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However, if I will change to start from the top level hit enter.

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As you can see here we got all the directory directory is here under this user or that or the or the

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directory that belongs to this user.

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I can do the same thing if I would like to for example, do group, then we have a group student hit

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enter.

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So you can see here we get.

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All the directories that belongs to group student.

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Now let's move on to another example here.

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So another example, if I would like to do.

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Search.

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If I would like to search text within multiple files.

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So the multiple files here, for example, I'm going to do cut month first.

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As we can see here, we have this text file and I would like to search, for example, for the month

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March.

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So I'm going to search for a keyword here.

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So I'm going to do find first, then dot the current working directory, then the type.

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So the type will be F, so the file text file, then the name here.

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So in this here, the name I have to say.

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What is it before so I name so I'm going to look for it doesn't matter which is the file.

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So it's not a specific.

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I'm not I'm not I'm not looking for a specific file for that text.

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Then after that dash.

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So I'm going to use another option here.

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E x.

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E c.

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So e x e c.

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This is the option that I would like.

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So this is an execute command.

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I'm going to execute this command after the search.

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Then I'm going to use the grip command.

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Then after the grip between a single quotation, for example, I'm going to search for.

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The word march, then close to the quotation mark.

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The single quotation mark.

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So the single quotation mark here.

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Then after that, what I'm going to use with the presses, I have to do like that.

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Then space, then the backslash, then semicolon.

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So we need to understand the structure.

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If I would like to use the execute command.

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This is how this is how it how it works.

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So I'm going to use the execute in order to run another command.

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After the find or the search command.

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Then grip.

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So what I'm going to do grip the word marsh Then I have to close it with the presses space.

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Then the backslash in a semicolon hit enter.

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As we can see here, we got the keyword.

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Marsh.

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I can do.

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I can also do it for another word.

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For example, April.

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I hit enter.

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And as you can see, we get the same output.

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Which is that one key word here, if I have the key word in a different text file.

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Let's do it here, for example.

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Let's see what we have.

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LS L and Cat.

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I will do here for the number.

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So I'm going to add, for example, here, word April, for example.

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Then I'm going to close this one and save the file.

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So let's just check that we have here the keyword and here the month.

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Okay, so we have the keywords and these two files.

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So in this case, if I'm going to do the search here defined, it means that I'm going to get two outcomes

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hit enter.

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As we can see here, we get two.

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Words of April.

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Now let's move on to another command.

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So another command is the same that I'm going to use the execute command.

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But in this case, I would like to copy all the text files in.

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So I have the first option, the type.

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File, then ignore case.

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It doesn't matter uppercase or lowercase.

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Then between a double quotation I'm going to do star dot txt so I'm going to look for all the txt files.

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Doesn't matter the name, whatever before the dot txt the extension here then e.

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So I'm going to execute and I'm going to use the copy.

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So what I'm going to do, I'm going to copy all the txt files in this current working directory.

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To where.

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To a directory under the slash home.

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So here in this case, since we're going to use the.

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CPP, which is the copy, then I have to use the process before the directory that I would like to.

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Save all the files inside that directory, then space, then the back slash semicolon hit enter.

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And dash L as we can see here now, first we have to create.

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I didn't create the directory.

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I'm going to create the directory here.

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Making directory.

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We cannot make it.

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Files exist.

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Okay.

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Let me remove that directory.

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First here.

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Then I'm going to make the directory here.

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Perfect.

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Then I'm going to run the command again.

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As we can see here, we copied all the text files to this directory.

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So we're going to reboot.

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So find this current current working directory and the type it's file then dash I name.

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So the ignore case, it doesn't matter this between the quotation marks.

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So all the text files that has the extension that the txt.

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So it doesn't matter.

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Ignore the names or all the names here or the numbers then since we're going to use the execute.

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Copy.

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So once we're going to use another command, then we have to use this.

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The process we're going to use the process with the copy here.

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And then after the process, we're going to use the the directory that we would like to save all those

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files to this directory.

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And we don't forget that we have to close the the execute command with the backslash, then a semicolon.

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Let's go inside.

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Okay.

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LZ, Dash, L as we can see here, we have this directory.

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I'm going to go inside this directory.

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LZ, l as we can see here, what we did, we copied all the files from the current working directory

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to this directory.

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The WD.

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As you can see here, we are under this current working directory.

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Now let's move on to the next command.

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So since I'm inside this current working directory, what I'm going to do here, I'm going to delete

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all the files in this current working directory.

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So WD this is the current working directory right now and find in this current working directory I name

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then.

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I'm going to just do the text.

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So the names ignore case doesn't matter.

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Upper or lower case.

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Then all the.

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Files that has the extension that txt then execute perfect.

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R m dash rf because I would like to delete all the files in this current working directory here.

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Then what I'm going to do after that?

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Close the presses.

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The space.

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Then what I'm going to do is the backslash semicolon.

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Hit, enter.

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As we can see here, we don't have any file because we removed all the text files from this.

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Current working directory.

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If I would like to find more information about this find command, I can go to the man page.

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As we can see here, we can get all the details and the options and also about this command.

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As you can see over here.

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The dash, execute then the command so we can get more information about how to use and also here how

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to use this command with the braces.

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And plus and as you can see here is that you can use it with this backslash, as we can see over here.

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Hearing this if we can use the prices and with a backslash.

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Okay, That's concludes our session.

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Thank you and see you in the next lesson.