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From: arisawa <arisawa@ar.aichi-u.ac.jp>
In-Reply-To: <7963B664-4127-47A3-B8CF-88FA70C52AA6@ar.aichi-u.ac.jp>
Date: Tue,  1 Oct 2013 20:44:24 +0900
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References: <7963B664-4127-47A3-B8CF-88FA70C52AA6@ar.aichi-u.ac.jp>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] bug? test f -older t
Topicbox-Message-UUID: 82d2649c-ead8-11e9-9d60-3106f5b1d025

I have forgotten that I took up this bug in Jun this year.
Already fixed in distribution?

On 2013/10/01, at 20:34, arisawa <arisawa@ar.aichi-u.ac.jp> wrote:

> Hello,
>
> Am I missing something?
> It seems logic is inverted to me.
>
> Kenji Arisawa
>
> maia% ls -l
> ...
> --rw-rw-r-- M 323 arisawa arisawa         0 Sep 29 06:29 x
> --rw-rw-r-- M 323 arisawa arisawa        14 Sep 28 17:50 z
> maia% mtime x
> 1380403777 x
> maia% if(test z -older 1380403777) echo older
> maia% if(! test z -older 1380403777) echo older
> older
> maia%
>
>
> man test(1)
>          f -older t True if file f is older than (modified before)
>                     time t. If t is a integer followed by the letters
>                     y(years), M(months), d(days), h(hours),
>                     m(minutes), or s(seconds), it represents current
>                     time minus the specified time.  If there is no
>                     letter, it represents seconds since epoch.  You
>                     can also concatenate mixed units.  For example,
>                     3d12h means three days and twelve hours ago.
>
> the source code /sys/src/cmd/test.c
> int
> isolder(char *pin, char *f)
> {
> 	int r;
> 	ulong n, m;
> 	char *p = pin;
> 	Dir *dir;
>
> 	dir = dirstat(f);
> 	if (dir == nil)
> 		return 0;
>
> 	/* parse time */
> 	n = 0;
> 	while(*p){
> 		m = strtoul(p, &p, 0);
> 		switch(*p){
> 		case 0:
> 			n = m;
> 			break;
> 		case 'y':
> 			m *= 12;
> 			/* fall through */
> 		case 'M':
> 			m *= 30;
> 			/* fall through */
> 		case 'd':
> 			m *= 24;
> 			/* fall through */
> 		case 'h':
> 			m *= 60;
> 			/* fall through */
> 		case 'm':
> 			m *= 60;
> 			/* fall through */
> 		case 's':
> 			n += m;
> 			p++;
> 			break;
> 		default:
> 			synbad("bad time syntax, ", pin);
> 		}
> 	}
>
> 	r = dir->mtime + n < time(0);
> 	free(dir);
> 	return r;
> }
>
>
>
>