On Thu, Nov 16, 2000 at 07:10:57AM -0600, Eric Clover wrote:
> hello,
> i have a need for something that will cat a large file, grep it for a
> word and have the ability to pull the 5 lines before and after (more
> like 3 lines before and 8 lines after) the grep has found the word and
> display the results. example:
That's a case of RTFM... :-) (assuming you have grep 2.3 or higher
installed, which should be the case for RHL 6.2 and higher, IIRC)
>From the grep man page:
<quote>
All variants of grep understand the following options:
-A NUM, --after-context=NUM
Print NUM lines of trailing context after matching
lines.
-B NUM, --before-context=NUM
Print NUM lines of leading context before matching
lines.
</quote>
So, in your case:
grep --before-context=3 --after-context=8 'EXPRESSION' FILE
(Note: No "cat" necessary...)
HTH,
Thomas
--
"Look, Ma, no obsolete quotes and plain text only!"
Thomas Ribbrock | http://www.bigfoot.com/~kaytan | ICQ#: 15839919
"You have to live on the edge of reality - to make your dreams come true!"
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