Name: ライブデモ：GREP COMMAND [PART 2] (LIVE DEMO : GREP COMMAND [ PART 2 ])
Uploaded: 2021-01-14T10:08:37.000Z
Duration: 16 min 45 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

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My name is Vineet and this is part two off grab tutorial and in this video will do a live demo covering all the options that were discussed in part one.

So for those of you have not seen my previous video, I highly recommend you to first go and watch my previous video and grab, wherein I have covered all the Turi aspect related to grab command in this video will do alive the more off all those options that were discussed in part one.

All right, so here I am on my elementary Lennox machine.

Let me open up a terminal and let me increase the phone size.

You washed my previous video part one on grab knows their grip has tons off options available, and that is what makes it so powerful.

Now there are multiple ways to achieve a result in grab, so there's no one particular, best way or one way off doing things.

Their multiple options that are available and the same results can be achieved by different options.

Important thing to know Terry's that you learn by practice and you learn by your experience.

So the more you use grip, the better you become, innit?

Grab that I'm currently running to do that type, grab and give a space dash Capital V for version.

So it says I'm running low grip version 2.16 Let's also quickly very find that I'm running the current version, which is available in the stable.

Repo off elementary Always to do that type apt gosh policy grip.

And as you can see, the candidate washing is 2.16 which is same as the install versions.

So I'm running the latest version, which is available in the rep Oh, off elementary overseas.

And as you can see, I'm currently under or test directory.

And under this directory, I have three text file, one of which is countries.

Don't t X T, and this file contains names off all the countries in the world along with their capital, so I'll use this file for our demonstration purpose.

Now let's start with the most basic usage of grip.

Let's check if the World Japan is available in countries don't t X T to do that type grip and in single courts, type Japan and give the file countries Don't t X T.

As you can see, grip has found a match, so we have the search tank.

Japan, along with its capital Tokyo grab, has printed the complete line.

Now the other input method that is available in Grab is instead of giving ah file to search, you can also provide a complete directory containing files in it.

So to do that type, grab dash are for a cursive.

And then now you can either use period symbol, which is for the current directory.

Or you can also type in the complete path to the director.

So let's type home Xbox stick test directory.

No, this is the Korean directed that we're currently in Now.

If I press enter now, as you can see, Grip has found two matches.

The output line starts with defile where the match occurred and then the match text.

Now you can also provide input from standard in any command that can be run in terminal.

We can Piper True Grip, for example, I F conflict will give configuration off.

All the interface is that you computer has now You can also Piper true grip.

So if I type I have config, give a space and piper through grip and search for E T.

Now this gives us only the line where 88 0 is present.

So this way you can pipe any command that can be run in a terminal.

You can basically use it as a filter for your other commands.

You can also cat countries dor t x tree and then give grip Japon that will give us the same output.

Similarly, you can use TCP dump and pipe it true grap so that the output is displayed only from a particular I P address or foot particular website.

Instead, off normal string, we can also provide regular expression or extended regular expression for our source text.

Let's take an example off regular expression.

So if I want to find out the names of all the countries that starts with the alphabet, J, I can just use the cat turd symbol and G and give countries dor t x t file as you can see we have the output off all the lines that starts with the alphabet G.

Similarly, you can use the dollar sign to find out all the lines that ends with a particular alphabet.

So let's find out all the lines that ends with the It's a bit E There you go.

Now, to find out all the lines that starts with the alphabet A, B or C, you can use the square brackets and type A, B, C and the single court and give countries Don't t x t.

So let's you give the camera symbol All right, so we do not have any output.

So to telegraph, to ignore case just to use the dash I option.

And now you have all those lines that starts with a B or C.

Now, instead of typing ABC, you can also use hyphen, which is the range indicator.

Anything between a to see will be matched, so you have the same output.

Now, if you want to invert this, that is if you want to find out all the lines that do not start with a B or C, you can use the square records, Vid countered.

So let's type the falling grab dash I for ignore case.

Scattered symbol for start of the lane that inside square record.

Use a carrot here, dash C and the square bracket and and the single court and provide the file.

Now we have the output off all those lines that do not start with a B or C.

Next, let's find out all the countries that starts with the alphabet F and has fourth character as the alphabet.

And to do that type Gramp Dash, I ignore case, then starts with the letter F and then fourth character, as in.

So for that, we can use the period symbol one to the fourth character to be end and provide the country's or t x t.

France, which starts with the alphabet F and the fourth character, is the alphabet, and now you can also use the star symbol, which tell grips to use the preceding corrector zero or more times.

If I used your star, it will match all those lines that starts with F and has the corrector and innit?

Now let's try out some of the examples off extended regular expressions to use extended regular expression.

Let's also use Ignore case and let's give a question mark.

Put all those line that starts with G, and the next alphabet is optional.

So if the line do not have a still, it will print the output.

As you can see, it has fined two lines that starts with the ah alphabet G and has the second alphabet as a.

And there's one Jordan, because the alphabet is optional.

No similarly instead, off question mark, you can use the plus symbol, which will tell grab to use the preceding character in this case one or more times.

So this time we will not have the output.

Similarly, we can tell grip how many times to use the alphabet using the curly braces.

So for Type One, which will tell Gramp to match a exactly one time if I Type two will not have any output, because Grab will search for any line that has J A.

You have three more options, comma at the end, which will telegram to match two or more times coma at the beginning, which will tell, Grab to match at at most two times, and you can also provide to number Separated by Kama.

To calm a five this will tell Grab to match preceding character two times, but not more than five times.

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ライブデモ：GREP COMMAND [PART 2] (LIVE DEMO : GREP COMMAND [ PART 2 ])

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