Re: grep by paragraph
On Fri, Aug 30, 2013 at 01:03:24PM +0200, Timothy Murphy wrote:
Dave Mitchell wrote:
>> that will print out a whole paragraph -
>> defined as the section between two blank lines -
>> containing a given word or phrase?
>>
>> Such as the above 4 lines.
>> If not, can anyone suggest a simple script that will do this?
>
> The perl one-liner below demonstrates this. Setting the $/ (input record
> separator) var to the empty string causes perl to read in "lines" a
> paragraph at a time.
> $ perl -e'$/=""; while (<>) { print if /green/ }'
/tmp/text
Thanks for the solutions.
I gather there is no method using grep or one of its variants?
I don't know about paragraphs, but you do have the -A, -B, and -C options to get
context.
grep -C 3 string file
This will give you three lines before and after lines containing string.
Mike
--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin 2, Ireland
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