02-11-2011
AlphaLexman is correct. The "last modified" timestamp is the most useful and is the one used by "ls -la" and "find -mtime" etc..
The "-ctime" timestamp is the timestamp when the inode was last changed. Some backup software changes this timestamp to mark the file "backed up".
Earlier I was trying to avoid the epoch date arithmetic or writing a "C" or "perl" (or whatever) program.
There are many techniques to find files which are less than 20 minutes old even if you don't have the GNU version of "find" - which offers this sort of search as standard.
Let's find out what you are trying to do in more detail.
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LEARN ABOUT DEBIAN
net::gpsd3::return::unknown::timestamp
Net::GPSD3::Return::Unknown::Timestamp(3pm) User Contributed Perl Documentation Net::GPSD3::Return::Unknown::Timestamp(3pm)
NAME
Net::GPSD3::Return::Unknown::Timestamp - Net::GPSD3 Return Base Class with Timestamp
SYNOPSIS
package XXX;
use base qw{Net::GPSD3::Return::Unknown::Timestamp};
DESCRIPTION
Provides a time, timestamp and datetime methods to a GPSD3 Return object.
METHODS
time
Seconds since the Unix epoch, UTC. The value may have a fractional part of up to .01sec precision.
Note: In 2.96 (protocol 3.4) the TPV->time format changed from unix epoch to W3C, but this method attempts to hide that change from the
user.
Since the POSIX standard for the Unix epoch does not use leap seconds but GPS system does I do not recommend that you use this method for
time display or storage. This method is purely here for backwards compatibility.
timestamp
W3C formated timestamp value either directly from the protocol >= 3.4 or calculated < 3.4. The value may have a fractional part of up to
.01sec precision.
Note: I expect that in protocol 3.5 the value will be passed directly as TPV->timestamp
datetime
Returns a DateTime object
BUGS
Log on RT and Send to gpsd-dev email list
SUPPORT
DavisNetworks.com supports all Perl applications including this package.
Try gpsd-dev email list
AUTHOR
Michael R. Davis
CPAN ID: MRDVT
STOP, LLC
domain=>michaelrdavis,tld=>com,account=>perl
http://www.stopllc.com/
COPYRIGHT
This program is free software licensed under the...
The BSD License
The full text of the license can be found in the LICENSE file included with this module.
SEE ALSO
Net::GPSD3, Net::GPSD3::Return::Unknown, DateTime::Format::W3CDTF, DateTime
perl v5.14.2 2011-12-27 Net::GPSD3::Return::Unknown::Timestamp(3pm)