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Purge files, keep 3 versions of last 4 days

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Top Forums Shell Programming and Scripting Purge files, keep 3 versions of last 4 days
# 8  
Old 10-28-2002
The above logic makes (rather unreasonable) assumption that the time stamps are exactly 7:30pm and 8pm for the 1st and 3rd files, which may not be possible practically... though, you can overcome this by increaing the time range by few minute on either ends...

Yes the best way would be (as Perderabo suggests) to create the "latest" 3 files in a separate directory, instead of cluttering them with unwanted files.. it would amount to a simple logic using date command...
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LEARN ABOUT DEBIAN

net::dns::sec::tools::timetrans

timetrans(3pm)						User Contributed Perl Documentation					    timetrans(3pm)

NAME

       Net::DNS::SEC::Tools::timetrans - Convert an integer seconds count into text units.

SYNOPSIS

	 use Net::DNS::SEC::Tools::timetrans;

	 $timestring = timetrans(86488);

	 $timestring = fuzzytimetrans(86488);

DESCRIPTION

       The timetrans() interface in Net::DNS::SEC::Tools::timetrans converts an integer seconds count into the equivalent number of days, hours,
       and minutes.  The time converted is a relative time, not an absolute time.  The returned time is given in terms of days, hours, minutes,
       and seconds, as required to express the seconds count appropriately.

       The fuzzytimetrans() interface converts an integer seconds count into the equivalent number of weeks or days or hours or minutes.  The unit
       chosen is that which is most natural for the seconds count.  One decimal place of precision is included in the result.

INTERFACES

       The interfaces to the Net::DNS::SEC::Tools::timetrans module are given below.

   timetrans()
       This routine converts an integer seconds count into the equivalent number of days, hours, and minutes.  This converted seconds count is
       returned as a text string.  The seconds count must be greater than zero or an error will be returned.

       Return Values:

	   If a valid seconds count was given, the count converted into the
	       appropriate text string will be returned.

	   An empty string is returned if no seconds count was given or if
	       the seconds count is less than one.

   fuzzytimetrans()
       This routine converts an integer seconds count into the equivalent number of weeks, days, hours, or minutes.  This converted seconds count
       is returned as a text string.  The seconds count must be greater than zero or an error will be returned.

       Return Values:

	   If a valid seconds count was given, the count converted into the
	       appropriate text string will be returned.

	   An empty string is returned if no seconds count was given or if
	       the seconds count is less than one.

EXAMPLES

       timetrans(400) returns 6 minutes, 40 seconds

       timetrans(420) returns 7 minutes

       timetrans(888) returns 14 minutes, 48 seconds

       timetrans(86400) returns 1 day

       timetrans(86488) returns 1 day, 28 seconds

       timetrans(715000) returns 8 days, 6 hours, 36 minutes, 40 second

       timetrans(720000) returns 8 days, 8 hours

       fuzzytimetrans(400) returns 6.7 minutes

       fuzzytimetrans(420) returns 7.0 minutes

       fuzzytimetrans(888) returns 14.8 minutes

       fuzzytimetrans(86400) returns 1.0 day

       fuzzytimetrans(86488) returns 1.0 day

       fuzzytimetrans(715000) returns 1.2 weeks

       fuzzytimetrans(720000) returns 1.2 weeks

COPYRIGHT

       Copyright 2004-2012 SPARTA, Inc.  All rights reserved.  See the COPYING file included with the DNSSEC-Tools package for details.

AUTHOR

       Wayne Morrison, tewok@tislabs.com

SEE ALSO

       timetrans(1)

perl v5.14.2							    2012-06-18							    timetrans(3pm)