I want to print next 3 lines after pattern matching.

naree · #1 (**permalink**) 09-24-2008

Dear Experts,
I have file called file1 in which i am greping a pattern after that i want to next 3 lines when that pattern is matched.

Ex:- file1

USA
UK
India
Africa
Hello
Asia
Europe
Australia
Hello
Peter
Robert
Jo
i want to next 3 lines after matching Hello pattern. i.e output should be.
Asia
Europe
Australia
Peter
Robert
Jo

Thanks & Regards
Naree

navojit dutta · #2 (**permalink**) 09-24-2008

hi....
Do you want the next three lines or all the lines after the pattern matching.
Your required output shows that you want all the lines after the pattern matching.
Be clear on your requirement first.

Yogesh Sawant · #3 (**permalink**) 09-24-2008

using Sed:

Code:

sed -n '/Hello/ {n; p; n; p; n; p}' filename

naree · #4 (**permalink**) 09-25-2008

Hi Yogesh,
When i use sed -n '/Hello/ (n; p; n; p; n; p)' file1 It is throwing unrecognized command. '/Hello/.. Can u help me in another way..

Dabheeruz · #5 (**permalink**) 09-25-2008

grep -A 3 "Hello" file.txt

Dabheeruz · #6 (**permalink**) 09-25-2008

Here is the same in perl:

Code:

#!/usr/bin/perl

open (FH,"blah.txt") || "die can't open file $!";

while (<FH>) {
        last if /Hello/ }

my ($curr, $next1, $next2, $next3)=<FH>;
close FH;

print "$curr$next$next2$next3";

naree · #7 (**permalink**) 09-25-2008

Dear Experts,
grep -A is not working in Solaris O.S. Please can anyone help in awk .

Thanks & Regards
Naree

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