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[Intro Music]

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So far we have talked about

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different Linux features, about

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management of directories files,

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about Linux soft and hard, and so

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on. And now it's time to talk about

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the 'find' command. And using this

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command you could easily and fast

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find different files and folders

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using different filter criteria.

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And first of all please verify

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whether 'find' is available in

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command line. Please type 'find'; and

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yes this command is available. And

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as you see when you simply enter a

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'find' command you already see some

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results. And basically in this

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case, you see all files and folders

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that are located in current

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directory. And at the moment the

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current directory is home directory

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for this particular user, it is

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'/root'. And here above you see

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a whole list of all files located

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in this folder. And recap that

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we have created several files

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and directories before. Let me

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list them as 'ls -la'; and I see for

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example such folder as

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'etc-backup-2'; and actually

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this folder was copied from 'etc'

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folder. Also, before we have created

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such files as 'file1.txt',

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'file2.txt', and so on. 'find' command

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is very, very powerful; and it has

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a lot of different options. And

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before showing you some examples,

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please open up 'man pages' for this

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command. Open up Google Chrome; and

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type here 'man pages find'; and click

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on this first link; and here you'll

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see description of this 'find' the

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command. And it is used for search

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of files and directories. Here is a

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large description of this command,

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and afterwards you see some

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options. And here's the difference

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between the 'find' and other commands

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that we have used before. 'find'

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command has regular options like

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'-P', capital P, '-L', and

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so on. But it also has additional

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options that come after argument.

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And this part of command is called

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Expression.

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Argument for 'find' command is

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actually path to a specific

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folder. For example, as argument

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you could use '.'; 'find' and '.'. '.'

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here is argument for 'find' command.

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Or you could use as argument for

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example, such path, '/bin'.

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Or you could use the relative path

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like '../', and so on. It

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is argument for 'find' command. But

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after argument, you could use

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additional options that are

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available only in 'find' command. And

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this part that comes after this

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argument, after path is called

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expression. An expression consists

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of multiple options, and you could

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use multiple options

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simultaneously. For example, if you

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scroll down, you'll see such

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options as '-daystart',

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'-follow', '-regextype', and so on. And

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please notice here difference

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between options that we have used

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and discussed before, and those

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options. I have told you before that

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single dash is used with single

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character options like '-l', '-c',

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and so on. But here you see

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that here long versions of options

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like 'daystart' are used with single

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dash, and that's because those

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options are called positional

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options, and they are used inside

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of the expression that comes after

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arguments inside of the 'find'

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command. All right, that is the

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structure of the 'find' command. It

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contains a regular options,

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argument, and additional expression

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that contains different options

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like 'daystart', and so on. If you

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scroll down here, you may find a

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bunch of such kind of options like

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'maxdepth', 'mindepth', 'mount', and so

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on. And if you scroll down, you may

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find some examples of usage of this

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'find' command. Here they're. And for

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example, in this command, this

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'/tmp' is actually argument; and

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after argument, you see multiple

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operators. Here's operator

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'-name', here's one more operator

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'-type', and here's additional

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operator '-print'. Notice that some

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of those operators may have own

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arguments, and 'core' here is argument

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for this '-name' operator; 'f' is

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argument for this operator,

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'-type'; and '-print' doesn't have

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any operators. Also if you want you

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could pipe result of 'find' command by

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stdout to stdin of another

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command. And in one of the next

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lectures I will explain you what is

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'xargs' here. For now, please

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understand that 'find' contains

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non-traditional arguments; and they

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come after argument that is

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actually path to specific folder.

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Alright, now let's dive into

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examples; and let's examine

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capabilities of 'find' command. But

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let's proceed with that after the

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small pause. See you next. Bye.

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[no audio]