Re: -daystart -mmin

[Andreas Metzler]

On 2004-07-11 Dan Jacobson <address@hidden> wrote:
> $ man find
>        -daystart
>               Measure  times  (for -amin, -atime, -cmin, -ctime,
>               -mmin, and -mtime) from the beginning of today rather
>               than from 24 hours ago.

> Maybe you mean "24 hour increments measured from now" instead of
> "ago",

No.

> and also are you sure they apply to -mmin, etc.?

Yes.

The documentation is not right, but you are wrong, too. ;-) -daystart
does not measure from the "beginning of today" but from the "beginning
of tomorrow" or the "end of today" respectively.

It is to test. Generate a file with current timestamp (touch foo) and
test. "find -mmin -60 -type f" will find it, but "find -daystart
-mmin -60 -type f" will not (unless your local time is between 23:00
and 00:00 hours).

The same applies to -mtime. - Generate dummy files in 10-hour
intervals (for i in `seq -w 1 5 51` ; do  touch --date="$i hours ago"
$i ; done) and test. "find -daystart -mtime -1" will list all files
generated today, i.e. much less than "find -mtime -1" which would list
anything generated in the latr 24 hours.
                  cu andreas
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