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# 1  
Old 06-29-2006
Get the Previous date
Dear all,

I want to echo the previous date every time whrn i run a script

eg -

./test.sh

result-

Today is - 2006 06 29
Yesterday is - 2006 06 28

exactly like this.

How to do this ....?

Thanks,
Nayanajith.
# 2  
Old 06-29-2006
If you're using GNU date (as on Linux systems,) you can do somthing like:
date -d yesterday
to get "now - 24 hours"

If you're not, you can use the wonderful datecalc script provided by Perderabo:
https://www.unix.com/unix-for-dummies-questions-and-answers/4870-days-elapsed-between-2-dates-post16559.html#post16559
# 3  
Old 06-29-2006
Code:
$ cat test.sh
#! /bin/ksh
a=`date +%y%m%d`
b=`TZ=CST+24 date +%y%m%d`
echo "Today is $a"
echo "Yesterday was $b"

NOTE: Command, `TZ=CST+24 date +%y%m%d` for yesterday's date I found at some thread, on the same board.

If you have GNU date avaialbe it has more powerful features.


Regards,
Tayyab
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