Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!burl!mgnetp!ihnp4!zehntel!hplabs!sri-unix!gwyn@BRL-VLD.ARPA From: gwyn@BRL-VLD.ARPA Newsgroups: net.unix Subject: Re: multiple versions Message-ID: <750@sri-arpa.UUCP> Date: Sat, 4-Aug-84 18:12:04 EDT Article-I.D.: sri-arpa.750 Posted: Sat Aug 4 18:12:04 1984 Date-Received: Mon, 6-Aug-84 01:04:15 EDT Lines: 8 From: Doug Gwyn (VLD/VMB)cc -o foo.c foo.c will not clobber your source on UNIX System V. This trivial safety check (as well as others to keep "cat" from writing the file it is reading and so forth) could easily be added to older versions of UNIX. As to keeping backup copies of source code, that is what SCCS is for.