Linux Date Command gives wrong year with +%g

[Gary Warner]

I'm having an issue with the spam data mine that seems to be related to the 
linux "date" command.

This morning's spam is being labeled as being from 2009.  I immediately assumed 
that someone had hardcoded a year, and started examining code to see who I 
should scold about this.  But in each case, the program is naming the files 
based on a date calculation.  

I'm creating a variable called "NOWDATE" using the command:

NOWDATE=`date +%g%b%d`

Yesterday for example, this resulted in dates of 09Dec31

per the man pages . . . 

%g = last two digits of year of ISO week number
%b = local abbreviated month name (e.g., Jan)
%d = day of month (e.g, 01)

When I give the command, "date", I get:

Fri Jan  1 09:05:06 CST 2010

But when I give the command "date +%g%b%d" I get:

09Jan01

when I give the command "date +%G" I get:

2009

when I give the command "date +%F" I get:
2010-01-01




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Gary Warner
Director of Research in Computer Forensics
The University of Alabama at Birmingham
Department of Computer & Information Sciences
& Department of Justice Sciences
205.934.8620             205.422.2113
address@hidden        address@hidden

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