Linux - I O Redirection

so in this video I am going to explain

you about IO redirection now this IO

means input and output redirection you

can redirect your input anywhere you can

all day direct your output anywhere into

any particular file or into a different

terminal so the same thing we are going

to see here now if I'm talking about an

input/output trade direction as as

discussed this contains a command or a

particular commands or any text of the

file we have we can move in from your

one terminal to the other terminal or we

can use the output of one data or the

one page from the other page as well so

we have two different three directions

into it called as an output redirection

and your input redirection output

redirection what it will do you have

already given a command once you get the

output of this command you can get this

output into a different file or you can

redirect into a different terminal or

into different commands so here we can

see the output from a command lon

normally intent for the standard output

can be easily diverted to a file instead

of getting it on the prompt itself same

way for D directing the file the output

file or output command into the other

particular file or the other command we

just need to use this greater than sign

so for example I have given one

particular command and I want the output

of this command to be saved in the file

I'll just use the greater than sign

after the command and post that a file

name and I need to store it same way we

also have input redirection for example

I have a blank file created and I want

some output of a particular command into

this blank file so we can also take the

input of a command into it so again the

input of a command can be redirected

from offer so there you need to use less

than sign to redirect the input so this

is a greater than sign we can use for

output redirection and less than sign we

can use for input redirection so let us

see how we can use this input and output

redirection in to our console so here we

are going to talk about input and output

redirection so our discuss

if suppose I have some common Ori I hit

some command it will give me output on

the same consolers I'm terminal now what

if I want to provide the output Somalia

domina what are we doing is I will be

giving the same command who and I'll use

the output tray direction so this output

of this particular file will be moved

into thee

users but this is how generally we give

the output tray direction now the output

has not shown on the terminal but

instead it is moved on the users far you

can see this is updated now one more

thing we would like to see here that is

if suppose I am moving in the other

terminal and I get to login with some

different user like I have logged in

with James

so ultimately what will happen

ultimately what is going to happen is

like the who come on will change right

is the who will have one more than free

that James is added on TTY zero and

whatever I want to append this entry now

what will happen if I use the same come

on and users who and users but will

replace the complete content so the

trainer entry what we have wretchedly

log it won't be it will be moved so if I

want to

redirect this output to the users but I

want to append the entries just you need

to give double greater-than sign that

means you just need to define the is

beer addiction signed over here which

will be appending the existing file just

hit enter and check for catch users you

can see you have both tea

you have both the entry first for entry

from the first file and then the second

for increase you have right so this is

what exactly how we can use the output

in a direction now what if I want to use

the input tray direction so input

reduction can be used for anybody who

are commands like if suppose I want to

check for all the particular user

entries which I have added I want to

check into the particular file and I

want that that I should get the word

count of those things so what I can do I

can use the input redirection sign and I

can go for

users so now what it has done it has

taken the output of this particular user

and has counted it and hits us provided

over here itself so you can see the

command is showing the

w seas or the NSA word count of this

particular user into it right so it will

show you the output over here so this is

called as an input redirection so your

command is taking input from the

particular well now for example I have

created a file that is touch file I have

created line with the name new and again

I give new

input the direction sign and

users so it's showing me c'mon not for

means anyway I can only use and

left-hand side t come on not the

particular fun name

but white versa vice versa into the

output interaction father when I put in

detention file we came to come on and

here we need to specify the file name

for example I want to check the users WC

and I want to put the output into the

file called as new file which I have

created taken check the cat command for

the new file

so this is the output so this is how we

generally really find the input tray

direction and your output reduction

commands and append the entries for it

now for example if I added morning trees

into the users I just move into the

need to move here itself directly

users and I moved into the users I'm

going to add some entries more entries

over here so I'm just here that's that's

all entries we have this is I've added

the number of words into this right so

I'm just going to save the same

and more out of it

now again what the file was containing

the new file was containing was this one

right now again I want to redirect the

output of your this file so what I'll do

I'll give the command WC and then the

file name users again redirected

check it check the content on this

particular file

it's a finding the values so this is how

generally we put the know the defection

signs we can also use the double

redirection sign so that we can append

existing file over here so into next row

section we are going to check up out the

administration parts how we can

administer it to complete users and

comments as well as your disk that's

what we actually we are going to see so

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