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From: hadeishi@husc7.HARVARD.EDU (Mitsuharu Hadeishi)
Newsgroups: comp.sys.amiga
Subject: Re: Setting File Dates
Message-ID: <1656@husc6.UUCP>
Date: Mon, 13-Apr-87 13:57:33 EST
Article-I.D.: husc6.1656
Posted: Mon Apr 13 13:57:33 1987
Date-Received: Sat, 18-Apr-87 18:51:04 EST
References: <6597@allegra.UUCP>
Sender: news@husc6.UUCP
Reply-To: hadeishi@husc7.UUCP (Mitsuharu Hadeishi)
Organization: Harvard Univ. Science Center
Lines: 34

In <6597@allegra.UUCP> dsf@allegra.UUCP (David Fox) writes:
>I am sure I saw something about this somewhere, but I can't find it
>now.  The question is, how can I set the modification date on a file?
>I need this in order to copy directories from floppy to vd0: and
>not have make think everything is messed up, and so I only have to copy
>the files that changed back onto the floppies.  I plan to add the
>-p (preserve date) flag to the copy command in the shell.

	A few ways of doing it: the easiest is to use the SetFileDate
action, a new AmigaDOS packet action.  It's documented in the 1.2
AmigaDOS autodocs, I think.  At least it's in the 1.2 changes section
of the 1.2 Gamma 1 documentation.

	But a quick and dirty way to do this, assuming your files
are up to date to start with, is to do a

	copy df1:source/Makefile vd0:source
	copy df1:source/#?.(c|h) vd0:source
	copy df1:source/#?.o vd0:source

	This is what I usually do (since I almost always terminate
a programming session by recompiling my code to make sure it
at least compiles properly, since I don't like to take off
from the middle of an editing session.)  And, of course, in the
Makefile, after each compile, I have a

	copy sourcefile.h vd0:source
	copy sourcefile.c vd0:source
	copy sourcefile.o vd0:source

	to automagically keep my floppy record updated.  (I typically
have a header file for most of my source files for exported variables.)

				-Mitsu