Path: utzoo!attcan!uunet!virtech!cpcahil
From: cpcahil@virtech.uucp (Conor P. Cahill)
Newsgroups: comp.unix.questions
Subject: Re: How to find process name in c?
Message-ID: <1990Jul18.101321.16302@virtech.uucp>
Date: 18 Jul 90 10:13:21 GMT
References: <23896@adm.BRL.MIL>
Reply-To: cpcahil@virtech.UUCP (Conor P. Cahill)
Organization: Virtual Technologies Inc., Sterling VA
Lines: 22

In article <23896@adm.BRL.MIL> konczal@mail-gw.ncsl.nist.gov (Joseph C. Konczal) writes:
>
>   From: "Conor P. Cahill" <cpcahil@virtech.uucp>
>   Date: 15 Jul 90 01:59:57 GMT
>
>   An easy way to see if a particular executable is running is to try
>   to open the file with write permissions.  If you get the errno ETXTBSY,
>   the executable is being run.
>
>Where does this happen, what kind of Unix?  I have overwritten
>executable files that are currently running under various revisions of
>BSD, SunOS, even VMS, without ever getting errno ETXTBSY.  After the

As a minimum it happens on System V.*, HP-UX, and Ultrix (that is all that 
I have access to at the momemt).  Are you overwriting by unlinking the
original as opposed to opening & writing on top of what was there?


-- 
Conor P. Cahill            (703)430-9247        Virtual Technologies, Inc.,
uunet!virtech!cpcahil                           46030 Manekin Plaza, Suite 160
                                                Sterling, VA 22170