grepping a stringd + 3 lines 1

[MoshiachNow]

Hi,

I have a 10 MB text file,no space/special paragraph marks between the lines.

I need to grep out lines with a <string> and 3 lines after this line .

How will I do it ? &quot;Long live king Moshiach !&quot;
h

http://www.noahide.com/movement.htm

 

[bigoldbulldog]

Here are two one line solutions.

sed -n '/grep/{$!N;$!N;$!N;p;}' < 10meg.file

awk '/grep/{print;for(i=0;i<3 && getline>0;i++) print;}' < 10meg.file

Cheers,
ND

bigoldbulldog@hotmail.com

 

[MoshiachNow]

thanks &quot;Long live king Moshiach !&quot;
h

http://www.noahide.com/movement.htm