how to find the time before 30 minutes

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# 1  
Old 08-21-2009
how to find the time before 30 minutes

Hi All,

I want to find out the time before 30 minutes. I am able to do with in hours limit.

Fri Aug 21 06:50:00 BST 2009

TZ=CST+1 date
Fri Aug 21 04:50:02 CST 2009

Can any one please help me
# 2  
Old 08-21-2009
why are you working on 2 different time zones?
# 3  
Old 08-21-2009
If you are using bash you can try using the --date option. Sonething like this
sh-3.2$ date
Fri Aug 21 01:16:57 CDT 2009
sh-3.2$ date --date="Fri Aug 21 01:16:57 -4:30"
Fri Aug 21 00:46:57 CDT 2009

# 4  
Old 08-21-2009
perl -le 'print scalar localtime (time() - 2*60*60);'

# 5  
Old 08-24-2009
Originally Posted by panyam
perl -le 'print scalar localtime (time() - 2*60*60);'

Thanks a lot. This is what i was expecting. As i am new to perl. Could you please tell me hoie can i pass parameterized value to this command. As after some time my requirement is changed for 50 mins instead of 30 mins.
# 6  
Old 08-24-2009
$ date -d '-30 min'

on Linux.
# 7  
Old 08-24-2009
Something Like this :

perl -le "print scalar localtime (time() -  "$var"*60);"

To be frank i am not much aware of the "perl", how ever this one i was using for date related issues. So posted.
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