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Shell Programming and Scripting

Formatting date

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# 1  
Old 07-07-2010
Bug Formatting date
Hi all


Code:
Y=`date +'%Y'`
M=`date +'%m'`
D=`date +'%d'`
if [ $M -eq 01 -o $M -eq 03 -o $M -eq 05 -o $M -eq 07 -o $M -eq 08 -o $M -eq 10 -o $M -eq 12 ] && [ $D -eq 01 ];then
yesterday=$Y$M`expr $D + 30`
echo $yesterday
else
if [ $M -eq 04 -o $M -eq 06 -o $M -eq 09 -o $M -eq 11 ] && [ $D -eq 01 ]; then
yesterday=$Y$M`expr $D + 29`
echo $yesterday
else
if [ $M -eq 02 -a $D -eq 01 ]; then
yesterday=$Y$M`expr $D + 27`
echo $yesterday
else
yesterday=$Y$M`expr $D - 1`
echo $yesterday
fi
fi
fi

NB: I found this script in one of the unix.com forums. it works perfect .

I want the output of yesterday in the format
100707 whereas the current format is 2010077

Pls help
Last edited by pludi; 07-07-2010 at 12:19 PM.. Reason: code tags, please...
# 2  
Old 07-07-2010
use Y=`date +'%y'`

Code:
/home/d1kumar>  date +'%y'
10

Last edited by pludi; 07-07-2010 at 12:19 PM.. Reason: code tags, please...
# 3  
Old 07-07-2010
hey kumar

I wanted for the date and it should bein the format of two digits ( eg : 01 /02 not 2)
# 4  
Old 07-07-2010
/home/d1kumar> date +'%d'
07
/home/d1kumar> date +'%y'
10
/home/d1kumar> date +'%m'
07
/home/d1kumar>


I believe this command is doing all you want. If not - check the help ( man date ) or write the requirement in detail.
# 5  
Old 07-07-2010
Bug
Hi Kumar

Hey but in the script i am calulating yesterdays date and its coming in single digits ..
I also used date +'%d' for calculating the date

just run my script once .. and verify the o/p .. U will understand the issue
Pls help
# 6  
Old 07-08-2010
If you are using Linux, it will help u :

date -d "-1 days" +%y%d%m
# 7  
Old 07-08-2010
try this if you are in solaris:
Code:
date +'%Y%m%d'

sorry, this gives only current date.
Last edited by ensameer; 07-08-2010 at 05:04 AM.. Reason: proper format
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