[SunHELP] grep

[Wyatt Draggoo]

I couldn't find a way to do it with just grep, but you could do something
like this:

# for i in `grep -n pattern filename | awk -F: '{print $1}'`; do
>    perl -ne "print if ($i-2)..$i" filename
>    echo
> done

Change the ($i-2) and $i values in the Perl line to get different numbers
of surrounding lines.  ($i-1)..($i+1) would print the line before and the
line after the matchine line.  Note that if two lines in a row match, some
lines will be duplicated in the output.

Wyatt

> 
> Hey Everybody:
> 
> I was trying to find a way to grep a pattern in a file and then print out 
> that line and the two lines preceding the match.
> I already manned the grep, egrep and fgrep man pages and nothing was
listed 
> that fit the bill.  Maybe there is a more robust version
> of grep out there.  Any pointers would be appreciated.  Thanks in advance.
> 
> Bret
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--
Wyatt Draggoo