A week back date

Original Message

Name: Chinmaya
Date: April 4, 2006 at 08:35:55 Pacific
Subject: A week back date
OS: Unix
CPU/Ram: 128
Model/Manufacturer: HP-UX

Comment:

Hi
I would like to get a week back date.
Suppose today is 04-04-2006 , then a week back date is 28-03-2006. Could you please tell me how I can achieve this in unix command.
Can I get this result using 'date' command.
Thanks and Regards
Chinmaya

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Response Number 1

Name: lchi2000g
Date: April 4, 2006 at 12:54:44 Pacific
Subject: A week back date

Reply: (edit)

see - http://www.computing.net/unix/wwwboard/forum/6212.html
Luke Chi

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Response Number 2

Name: Chinmaya
Date: April 4, 2006 at 20:30:34 Pacific
Subject: A week back date

Reply: (edit)

Hi Luke
Many thanks for your reply.
I found from the link specified by you , we can get yesterday's date by assignment
TZ=aaa24 date +%Y%m%d.
But I am not able to get logic , how we can find a week back date.
Could you please help me on this

Thanks and Regards
Chinmaya

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Response Number 3

Name: nails
Date: April 5, 2006 at 07:51:41 Pacific
Subject: A week back date

Reply: (edit)

Take a look at this link:
http://www.computing.net/unix/wwwboard/forum/5223.html

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Response Number 4

Name: FishMonger
Date: April 5, 2006 at 08:37:03 Pacific
Subject: A week back date

Reply: (edit)

I would agree with the suggestion nails made in that second link, "...Perl is probably your best choice...".
This is the Perl command for retrieving the date/timestamp of exactly 1 week prior to the current date/time.
$lastweek = localtime(time - 86400*7);
Here's how you'd format it like your example dd-mm-yyyy.
use POSIX;
$lastweek=strftime("%d-%m-%Y",localtime(time-86400*7));

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Response Number 5

Name: FishMonger
Date: April 5, 2006 at 08:43:22 Pacific
Subject: A week back date

Reply: (edit)

From the command line:
perl -MPOSIX -e 'print strftime("%d-%m-%Y",localtime(time-86400*7))'

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Response Number 6

Name: Chinmaya
Date: April 5, 2006 at 20:42:51 Pacific
Subject: A week back date

Reply: (edit)

Hi Luke, Nails, Monger
Many thanks for your reply.
As per user suggesstion, I could get the a week back date.
Thanks and Regards
Chinmaya

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