Date: Mon, 22 Jan 1996 20:29:04 -0500 (EST)
From: Richard Toren <rpt@miles.sso.loral.com>
To: hackers@freebsd.org
Subject: Re: recursive grep 
In-Reply-To: <199601222354.QAA01113@rover.village.org>
Message-Id: <Pine.SUN.3.91.960122201441.26644A-100000@miles>
Mime-Version: 1.0
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Sender: owner-hackers@freebsd.org
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If you search the web under 'threads', you will eventually find a 
SunMicroSys location that has a number of examples of threaded code. One 
of these examples a 'tgrep' which is a multi-threaded grep. It is used as 
a testbed for different threading implementations.
  This might be a good test for the people who want to put in kernel 
threads. There is also a set of files there that convert POSIX threads to 
Solaris threads.

---from the README ----
Utility: tgrep (threaded recursive grep)
Author:  Ron Winacott 
Email:   ronw@canada.sun.com
Phone:   (905) 477-0437 X 340 Or (1-800) 363-6200
Fax:     (905) 477-0217
Address: 140 Renfrew Drive, 
         Suite #206,
         Markham Ontario,
         Canada. L3R 6B3
Group:   Developers Support Center (SMCC) OpCom.


*Introduction.
        
Tgrep is a multi-threaded version of grep. Tgrep supports all but the
-w (word search) options of the normal grep command, and a few options
that are only avaliable to tgrep. The real change from grep, is that
tgrep will recurse down through sub-directories and search all files
for the target string. Tgrep searches files like the following command:
-------------------------------

                         ====================================================
Rip Toren               | The bad news is that C++ is not an object-oriented |
rpt@miles.sso.loral.com | programming language. .... The good news is that   |
                        | C++ supports object-oriented programming.          |
                        |    C++ Programming & Fundamental Concepts          |
                        |     by Anderson & Heinze                           |
                         ====================================================
On Mon, 22 Jan 1996, Warner Losh wrote:

> : I would like add options for recursive searching 
> : (grep -R foo /usr/include). 
> 
> find /usr/local | xargs grep foo
> 
> Why do we need another wart on grep?  Especially when what you may
> want is find /usr/local -name \*f.h | xargs grep foo :-)
> 
> Warner
>