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[Intro Music]

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Now you know how to find specific

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files with specific extensions

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using the 'find' command. And you have

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seen that it would search for files

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and folders in different paths. For

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example, you could use absolute

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path to root folder using simply

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'/', or you could omit the

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argument and in such case, 'find'

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will use the current directory you

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are currently in. Now, let me show

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you some additional examples. Let's

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try to find all files. In such

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case, you could use such command as

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''find .'; next comes '-type'

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operator; and next you could

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type here 'f' that stands for file.

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Let's press Enter. And I have found

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all files in current directory. I

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could search for directories only.

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In such case, replace 'f' with 'd', like

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this, '-type d', directory. And now I

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have found all directories. Next, you

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could find only links, '-type

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link'. Here you see only links. But

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actually you see here only list of

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files with corresponding paths to

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every file, it is not convenient.

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And we have used before 'ls' command

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with option '-l', that has shown

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us table with the permissions, the

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size and so on. There is such

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option here in 'find' command; and

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this option is that '-ls', like so.

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Let's press Enter now. And now I

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see files in table format. But the

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formatting is a bit weird here. But

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anyway, here in the first column,

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you see inode number, afterwards you

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see here permissions, and you see

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that in all files first letter

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here is 'l', that's because we were

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looking for links. Also here you

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see user and the group, next comes

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date of modification and

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afterwards, link itself. But notice

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that this output isn't formatted

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using different colors. And it is

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not really convenient to read.

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Let's repeat the same action but

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use directories with '-ls'

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option. And now I see only

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directories, and here you see 'd' in the

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beginning of permissions sections.

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Alright. Next, you could find only

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empty files. For that you could use

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'empty' option, 'find .'; and

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let's look only for files; and

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let's add here option 'empty'. I

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am looking only for empty files in

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current directory. And for example

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here was empty file, let me copy

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its path and read this file, 'cat', and

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here will be actually result; and

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this file is really in fact empty.

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That's how you could search for

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empty files. Alright, next example.

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In the next example, let me show

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you how to search for files,

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depending on size of the file.

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So, 'find .'; and let's look only

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for files, '-type file'; and here will

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be operator '-size'; and here using

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following syntax like, '+10',

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let's say 'K', I will search for

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files that are larger than 10

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kilobytes. Let's do that. And I

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have found two files. Let's add

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here also 'ls' option; and I'll see

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actual size of those two files. And

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both sizes are larger than 10

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kilobytes. Recap that those sizes

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are in bytes here. All right, let's

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search for files that are larger

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than one megabyte, and let's look

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for files in all files and folders

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that are subfolders of 'root'

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directory. Enter. Then I found for

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example, such file as 'perl'. That is

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around three and a half megabytes.

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Also, there are other files and

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again, all files in this table are

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larger than one megabyte. But

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please notice that this output is

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not really convenient, and is not

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really nice looking, and it doesn't

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have any colors like output of 'ls'

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command; and it is actually

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possible to reformat this output

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and print it like 'ls' command

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prints. But I'll show you that in

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the next lecture. Now let me show

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you one more example. And you could

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use file permissions in order to

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find the file with specific file

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permission. And let me remove the

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'size' operator; and instead of it

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let's type here '-perm', that stands

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for permission; and as argument

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let's type here '777'; and let's

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search for such files with such

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permission only in current

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directory, like this. And actually

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no files were found. Let's modify

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this and let's search for all files

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and folders like this. And now I

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I see all links actually with read,

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write, and execute permissions for

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all users. You see those results

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here. I will explain you actually

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those permissions a bit later in

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details, and I will demonstrate to you

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how to change permissions, and we

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will talk about that

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when I explain you how to create

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executable scripts. Alright, that's

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some options that you could use

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with 'find' command; and next after the

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small pause let me explain to you how

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to execute additional command after

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'find' command. I'll see you next. Bye.

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[no audio]