Linux - GREP

now here we are going to talk about the

grep grep is called as a global regular

expressions or sometimes they are also

called as a general regular expressions

means all the particular expressions we

can use to find out anything

globally or anything into the Linux

operating system so wherever the file is

located wherever the text is located we

can find by just using the crap command

so grep command is generally globally

search for your Liguori expressions

generally you have grep command is used

to search a particular text completely

into the Linux operating system or you

can search the given file from the lines

contained we just matching to your

strengths or words for example now if I

want to search for a particular string

into my file I can also using the grep

command grep command can also be used

for searching for a file starting with

particular world for example I want to

check all the particular file which is

started with test named test1 test2

test3 any particular file which has

started with a test name I can also get

it to the search by using by grep

command so syntax of using the kreb

command is grep and the options we can

define there are several options we have

which we can check by using the man

pages then the pattern what exactly we

are going to search for into a file that

we can add by using the corrupt command

so grep is just a search command where

you can search this particular text or a

file globally into the Linux operating

system

so this is what the corpus let us see

how we can use this grep command into

our Linux console so we can check for

the files which we have as we are going

to use the corrupt c'mon I should have

one of the file which contains the names

bits fruit okay so I'm going to talk at

this file and I want to check for

whether we have Apple in this file

let showing you I have Apple written

three times under the file so it is

finding be you know content notify right

same way if I want to check for any

particular package or any particular

package which I have installed so

generally the command is for rpm and -

me

I'll use pipe sign crap or I can also

use query all that is QA and corrupt and

I can find out the package name and so

if suppose the package name is related

to something like

edifis

so I can check it will show you all the

packages which are having the NFS into

it right same way if I want to check for

the particular package which contains

mmm any particular file for example I

want to to checked in Crypt and any of

the fall like my fruit fall so I can

check for it so there is no crypts but

if I want to check whether it is

containing anybody could afford name but

sherry so it will show me the cherry the

same way generally search for a

particular ward into a directory like

also you have seen like when I have used

the corrupt PSE come on right that time

it will show you all the particular

processes but if I want to charge for a

particular process now for example I

want to search for a particular process

like for batch processes so I can just

sort - into the file then show see this

is the file which contains the patch so

generally grep was a tool which and

really we use for finding for something

so grab can be used anywhere you know

for finding the packages for you know

filtering a particular process and

giving you the output which process it

contain buried contain what the content

you have added in your file you can also

search from the file itself you know you

do not have to move into the file just

where the list is there for the file you

can check for thee and the name of the

file or T word which we have written

identify this is what the crap is and

how it generally works you have many

parameters even for the crap you can

check by using man crap so you have many

parameters many options for looking at

the crap you can also check for the line

numbers you can also check for the you

know different colors different many

things right so you can check for all

the parameters of the crap so basically

it is used for finding purpose you can

find and you know filter your data from

a particular file or overall from the

file systems so this is what the crap is

this is how generally we use the crap in

your next video we are going to talk

about how we are going to find a file so

here we are searching for a word but

well how we are going to file the fine

and files which we have located

somewhere and if I forgot where I have

saved my file so for that keep watching

the next video