X-Spam-Check-By: sourceware.org X-Envelope-To: X-Virus-Status: Clean Message-ID: <461CF9DD.2090505@mscha.nl> Date: Wed, 11 Apr 2007 17:08:13 +0200 From: Michael Schaap Reply-To: cygwin@cygwin.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070326 Thunderbird/2.0.0.0 Mnenhy/0.7.5.0 MIME-Version: 1.0 To: cygwin@cygwin.com Subject: Re: [ANNOUNCEMENT] Updated: cron 4.1-1 References: <461CEAAC.7040608@mscha.nl> <010a01c77c43$e1ea24e0$3c0110ac@wirelessworld.airvananet.com> <461CEEE0.7040202@mscha.nl> <011601c77c45$e87c8210$3c0110ac@wirelessworld.airvananet.com> <461CF3E6.2050802@mscha.nl> <011c01c77c48$d71fbf20$3c0110ac@wirelessworld.airvananet.com> In-Reply-To: <011c01c77c48$d71fbf20$3c0110ac@wirelessworld.airvananet.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On 11-Apr-2007 16:51, Pierre A. Humblet wrote: > ----- Original Message ----- > From: "Michael Schaap" > To: > Sent: Wednesday, April 11, 2007 10:42 AM > Subject: ***[Possible UCE]*** Re: [ANNOUNCEMENT] Updated: cron 4.1-1 > > > | On 11-Apr-2007 16:30, Pierre A. Humblet wrote: > | > | "[ -e /usr/sbin/sendmail ]" is true when a symlink > | > | "/usr/sbin/sendmail.exe" exists. > | > > | > Precisely if "[ -e /usr/sbin/sendmail ]" is true then > | > || ln -sf /usr/bin/cronlog /usr/sbin/sendmail > | > shouldn't run. > | > > | Indeed it doesn't. But then: > | > | [ -e /usr/sbin/sendmail ] && rm -f /usr/sbin/sendmail.exe > | > | does run. > | > | – Michael > | > | (I can't stand that syntax, by the way. It's so much easier to see > | what's going on when you use a proper "if"...) > > Except if that if /usr/sbin/sendmail.exe did exist in the first place > (not a dangling link) then cronlog would not have been linked, > for the same reason: > [ -e /usr/sbin/sendmail -o -e /usr/sbin/sendmail.exe ] > > and thus the rm -f would not do anything except possibly remove > a dangling symlink. I still don't understand what happened. > > Okay, I have a symlink sendmail.exe -> /usr/sbin/ssmtp.exe The following code: [ -e /usr/sbin/sendmail -o -e /usr/sbin/sendmail.exe ] || ln -sf /usr/bin/cronlog /usr/sbin/sendmail does nothing, since "-e /usr/sbin/sendmail.exe" is true. Then this code runs: [ -e /usr/sbin/sendmail ] && rm -f /usr/sbin/sendmail.exe and *does* "rm -f /usr/sbin/sendmail.exe", since "-e /usr/sbin/sendmail.exe" is (still) true. I'd just rewrite this as a proper "if". Much easier to read and maintain. (I don't really see what you're trying to do with that last statement anyway. In which situation is it supposed to do something useful?) – Michael -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/