Date command to obtain the last month is not working correctly..
Hello,
I could not find the exactly same post here.. so I will explain what I did to get the last month using date command.
I used
to get the last month. However, the returned value of above command on 2009/10/31 was 2009 10 and not 2009 09.. and the returned value on 2009/12/31 was 2009 12 and not 2009 11.
When I tried it on 2010/01/31, it returned 2009 12, which is what I wanted.
So it seems if I try this command on 31 and if the previous month does not have 31, it fails to return the correct value..
This logic leads to me that it will also fail when I try it on 2010/03/29, 30, 31 because there is no 2010/02/29, 30, 31...
Is it how date command works?? What do I have to do to get the correct 'Last month' even on 31...
I really appreciate your help!
Last edited by vbe; 02-03-2010 at 05:20 AM..
Reason: rm bad tags. added code tags
The o/p highlights the fact that his date command does not work if today's day number did not exist in the previous month.
e.g. 31/03/10 is a valid date but 31/02/10 is not. The o/s in use translates 31/02/10 into 03/03/10 ! Because the o/p wanted the previous month number it is wrong.
My circumvention is to fool "date" that is mid-month but I can't test the syntax without having a copy of Redhat.
Can you try it on your test system and post the results.
That is what I had... when I execute that command on Dec/31/2009, it returns Dec/01/2009 not Nov/30/2009... I changed the system date to March/29, 30, 31 and tried that command... it returned March 1, 2, 3... It also does not work for next month on those days..
So...I guess this is the spec of date command...
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---------- Post updated at 09:28 AM ---------- Previous update was at 09:11 AM... (1 Reply)
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