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3 days old date

 
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# 1  
Old 08-04-2009
3 days old date
can anyone please suggest me how do I get 3 days old date using korn shell in aix environment.

FILEDT1=`date +%Y-%m-%d`
FILEDT=$((FILEDT1 -3))
echo $FILEDT
1994

however my expected result is: 2009-08-01

Thanks
Mark
# 2  
Old 08-04-2009
You can't do date-math in a shell. It doesn't understand abstract types like that, and that's a good thing, otherwise it might start doing bizzare things to anything that looks like a date the way Excel does. Smilie
# 3  
Old 08-04-2009
3 days old date
Thanks All.

I found out how do do it.

v_prev_date=`TZ=CST+72 date +%Y%m%d`
echo $v_prev_date
20090801

Thanks
Mark
# 4  
Old 08-04-2009
Now that's a neat trick! I wouldn't have thought of that. Smilie Thanks for posting it.
# 5  
Old 08-11-2009
$ v_prev_date=`date --date='3 days ago' +%Y%m%d`
$ echo $v_prev_date
20090808
 
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