X-Spam-Check-By: sourceware.org X-Envelope-To: X-Virus-Status: Clean Message-ID: <461CFC0E.5000306@mscha.org> Date: Wed, 11 Apr 2007 17:17:34 +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> <461CF9DD.2090505@mscha.nl> In-Reply-To: <461CF9DD.2090505@mscha.nl> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit 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 17:08, Michael Schaap wrote: > 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. Make that: ..., since "-e /usr/sbin/sendmail" is 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/ > -- 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/