Re: date bug

[Philip Rowlands]

On Mon, 2 Jan 2006, William Johnson wrote:

> I have run this script on my linux router and in cygwin.
> In both cases, the date is changed from 2006 to 2005.
>
> <--->
> set Time_Stamp="01-Jan-2006 21:22:23"
> echo "    $Time_Stamp"
>
> set MyDate=`date --date="$Time_Stamp" "+%G-%m-%d %T %a"`
> echo "    $MyDate"
> <--->
>
> The problem disappears on January 2.

%G is the confusing expansion here:
       %G     the 4-digit year corresponding to the %V week number

Your example again with a %V included:

$ date --date="01-Jan-2006 21:22:23" "+%G-%m-%d %T %a, week %V"
2005-01-01 21:22:23 Sun, week 52

shows that Sunday 1st Jan 2006 is considered to be part of week 52 of 
2005. I confess that I can't think of any situation where "%G-%m-%d" 
would be a useful expansion, and would suggest using "%Y-%m-%d" instead.


Cheers,
Phil