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Shell Programming and Scripting

Help needed to extracting lines

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# 1  
Old 01-06-2014
Help needed to extracting lines
Hello,

I need help in extracting lines that meets following criteria

Grep for a particular word and return line before it, the line that has that word, and line after that

Code:
:::::::::::::::::::::::::
Subject
Hi there
My name is Jak
My last name is XYZ
Home Address
::::::::::::::::::::::::::::::
::::::::::::::::::::::::::::::

If i grep for Jak the output should give

Code:
Hi there
My name is Jak
My last name is XYZ

# 2  
Old 01-06-2014
Code:
grep -A1 -B1 Jak file

# 3  
Old 01-07-2014
Yes you can try this

grep -A (num of lines after) -B (num of lines before) Jak file



Cheers,
Adi
# 4  
Old 01-07-2014
With Sed
Code:
michaelf>uname
SunOS
michaelf>sed -n 'H
> /Jak/{
> g
> s/.*\n\(.*\n.*\)/\1/
> N
> p
> }' infile
Hi there
My name is Jak
My last name is XYZ
michaelf>

# 5  
Old 01-07-2014
Thanks everyone for prompt help!
# 6  
Old 01-08-2014
Code:
grep -C1 Jak file

It will give above yes and below lines
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