From owner-freebsd-hackers@FreeBSD.ORG Mon Sep 3 12:04:22 2007 Return-Path: Delivered-To: hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0243016A417; Mon, 3 Sep 2007 12:04:22 +0000 (UTC) (envelope-from yar@comp.chem.msu.su) Received: from comp.chem.msu.su (comp.chem.msu.su [158.250.32.97]) by mx1.freebsd.org (Postfix) with ESMTP id 3E18013C442; Mon, 3 Sep 2007 12:04:20 +0000 (UTC) (envelope-from yar@comp.chem.msu.su) Received: from comp.chem.msu.su (localhost [127.0.0.1]) by comp.chem.msu.su (8.13.4/8.13.4) with ESMTP id l83C3rn3058741; Mon, 3 Sep 2007 16:03:53 +0400 (MSD) (envelope-from yar@comp.chem.msu.su) Received: (from yar@localhost) by comp.chem.msu.su (8.13.4/8.13.4/Submit) id l83C3rTv058740; Mon, 3 Sep 2007 16:03:53 +0400 (MSD) (envelope-from yar) Date: Mon, 3 Sep 2007 16:03:53 +0400 From: Yar Tikhiy To: Tim Kientzle Message-ID: <20070903120353.GH30502@comp.chem.msu.su> References: <20070901073440.GL85633@comp.chem.msu.su> <46DAFE5C.6070806@freebsd.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <46DAFE5C.6070806@freebsd.org> User-Agent: Mutt/1.5.9i Cc: hackers@freebsd.org Subject: Re: Useful tools missing from /rescue X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 Sep 2007 12:04:22 -0000 On Sun, Sep 02, 2007 at 11:18:04AM -0700, Tim Kientzle wrote: > Yar Tikhiy wrote: > >Hi all, > > > >I've had to use /rescue recently and felt lack of a few basic tools > >in it, namely pgrep(1), head(1), tail(1), tee(1), and a text filter, > >e.g., sed(1). Well, in fact most functionality of pgrep(1), head(1), > >tail(1), and even tee(1) can be emulated if one has sed(1), but the > >tools are so tiny and convenient that it's a pity not to have them > >all handy during hard times. > > > >In addition, there are chflags and chmod in /rescue, but there's > >no chown in it, so the toolset is a bit incomplete. > > Oh, my. chown was definitely an oversight. That > should have been in there. > > My opinions: > * head, tail, and tee are no-brainers; just do it. > * sed would be a nice addition. (I atttempted to > fit 'vi' in there, but curses is rather finicky; > 'sed' would be more useful.) Thank you for supporting my idea! > * I personally would not add pgrep/pkill because I > never use them. They can be handy if you find yourself with a botched system still in multi-user mode and want to fix the things w/o dropping to single-user mode. Now there are ps(1) and kill(1) in rescue, which together with sed(1) can do the same job, but pgrep/pkill is much more convenient. Another option can be killall(1), but pkill(1) has almost superseded it because it is more widely adopted and has richer features without code bloat. -- Yar