Date: Tue, 3 Jan 2012 14:49:02 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Polytropon <freebsd@edvax.de> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Exact timestamp for sorting and renaming files according to creation order Message-ID: <20120103204902.GG24192@dan.emsphone.com> In-Reply-To: <20120103211150.41f1934d.freebsd@edvax.de> References: <20120103211150.41f1934d.freebsd@edvax.de>
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In the last episode (Jan 03), Polytropon said: > For a sorting script, I'm currently searching for a method to get file > creation date and time as exactly as possible. The best resolution I > could get was seconds. In case more than one file is created within the > same second, it doesn't work precisely enough. It should work from sh > script. > > For the purpose of preparing the sort list (that will be sorted and then > be used as a template for renaming the files with a prefix and a counter), > I'm using the "stat" program which creates output like this: > > % stat -f "%N %B" -t "%Y-%m-%d_%H:%M:%S" 1.txt > 1.txt 2012-01-03_12:12:12 > > It's also possible to use the Epoch time format, but it doesn't provide a > solution better than seconds: > > % stat -f "%N %B" -t "%s" 1.txt > 1.txt 1325589132 If you ask for the date to be printed in "float" (F) format, it gives more precision. The default is unsigned int (U) format. % stat -f "%N %FB" /COPYRIGHT /COPYRIGHT 1306190895.046721049 > I've read the manuals for stat as well as for strftime (which is the > facility stat's -t parameter addresses), but found nothing that is more > precise than seconds. > > Does anyone have a suggestion how to precisely determine the order files > have been created? -- Dan Nelson dnelson@allantgroup.com
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