04-04-2015
The only thing that can do that? Environment variable settings. Specifically TZ.
For whatever reason the NFS process has (an example, I do not know for sure)
a TZ variable that ends in -500, a bogus time offset for CST. You can make time display almost anything you want (within 24 hours) by tinking with the TZ variable. At the exact same moment. See below.
POSIX Systems will respond correctly to three formats of the TZ variable, even patently ridiculous values: Have a read here and then work with that. BTW the filetimes themselves are not messed up - they are in epoch seconds, not a format like May 7 1999 3:00pm CST. The files are in no way "broken". It is completely caused by the C runtime library time routines getting a bad TZ value.
The GNU C Library: TZ Variable
Then play with the TZ variable's contents and then run date and you will see what I mean.
Last edited by jim mcnamara; 04-04-2015 at 12:08 AM..
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LEARN ABOUT DEBIAN
test::mocktime
Test::MockTime(3pm) User Contributed Perl Documentation Test::MockTime(3pm)
NAME
Test::MockTime - Replaces actual time with simulated time
SYNOPSIS
use Test::MockTime qw( :all );
set_relative_time(-600);
# do some tests depending on time increasing from 600 seconds ago
set_absolute_time(0);
# do some more tests depending on time starting from the epoch
# epoch may vary according to platform. see perlport.
set_fixed_time(CORE::time());
# do some more tests depending on time staying at the current actual time
set_absolute_time('1970-01-01T00:00:00Z');
# do some tests depending on time starting at Unix epoch time
set_fixed_time('01/01/1970 00:00:00', '%m/%d/%Y %H:%M:%S');
# do some tests depending on time staying at the Unix epoch time
restore_time();
# resume normal service
DESCRIPTION
This module was created to enable test suites to test code at specific points in time. Specifically it overrides localtime, gmtime and time
at compile time and then relies on the user supplying a mock time via set_relative_time, set_absolute_time or set_fixed_time to alter
future calls to gmtime,time or localtime.
Functions
set_absolute_time
If given a single, numeric argument, the argument is an absolute time (for example, if 0 is supplied, the absolute time will be the
epoch), and calculates the offset to allow subsequent calls to time, gmtime and localtime to reflect this.
for example, in the following code
Time::Mock::set_absolute_time(0);
my ($start) = time;
sleep 2;
my ($end) = time;
The $end variable should contain 2 seconds past the epoch;
If given two arguments, the first argument is taken to be an absolute time in some string format (for example, "01/01/1970 00:00:00").
The second argument is taken to be a "strptime" format string (for example, "%m/%d/%Y %H:%M:%S"). If a single argument is given, but
that argument is not numeric, a "strptime" format string of "%Y-%m-%dT%H:%M:%SZ" is assumed.
for example, in the following code
Time::Mock::set_absolute_time('1970-01-01T00:00:00Z');
my ($start) = time;
sleep 2;
my ($end) = time;
The $end variable should contain 2 seconds past the Unix epoch;
set_relative_time($relative)
takes as an argument an relative value from current time (for example, if -10 is supplied, current time be converted to actual machine
time - 10 seconds) and calculates the offset to allow subsequent calls to time,gmtime and localtime to reflect this.
for example, in the following code
my ($start) = time;
Time::Mock::set_relative_time(-600);
sleep 600;
my ($end) = time;
The $end variable should contain either the same or very similar values to the $start variable.
set_fixed_time
If given a single, numeric argument, the argument is an absolute time (for example, if 0 is supplied, the absolute time will be the
epoch). All subsequent calls to gmtime, localtime and time will return this value.
for example, in the following code
Time::Mock::set_fixed_time(time)
my ($start) = time;
sleep 3;
my ($end) = time;
the $end variable and the $start variable will contain the same results
If given two arguments, the first argument is taken to be an absolute time in some string format (for example, "01/01/1970 00:00:00").
The second argument is taken to be a "strptime" format string (for example, "%m/%d/%Y %H:%M:%S"). If a single argument is given, but
that argument is not numeric, a "strptime" format string of "%Y-%m-%dT%H:%M:%SZ" is assumed.
restore()
restore the default time handling values. "restore_time" is an alias. When exported with the 'all' tag, this subroutine is exported as
"restore_time".
AUTHOR
David Dick <ddick@cpan.org>
PREREQUISITES
Time::Piece 1.08 or greater
BUGS
Probably.
COPYRIGHT
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
ACKNOWLEDGEMENTS
Thanks to a use.perl.org journal entry <http://use.perl.org/~geoff/journal/20660> by Geoffrey Young.
perl v5.10.0 2008-06-29 Test::MockTime(3pm)