Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!ssi!cjr
From: cjr@ssi.UUCP (Cris J. Rhea)
Newsgroups: comp.unix.admin
Subject: Re: How determine if a file is opened by another process
Keywords: file open
Message-ID: <131@ssi.UUCP>
Date: 31 Jan 91 04:48:56 GMT
References: <1488@nixsin.UUCP> <1991Jan29.204403.6071@rick.doc.ca>
Reply-To: ...uunet!ssi!cjr (Cris J. Rhea)
Organization: Supercomputer Systems Inc.
Lines: 4

See the System V command "fuser".  Although you do have to be root 
or have permissions on /dev/mem.....

--- Cris