Compare Dates.

Shell Programming and Scripting
1

Hi All,

I am entering StartDate and EndDate as parameters to script. Want to have an check saying, "If StartDate is greater than EndDate then don't execute the script".

Pseudo Code:

 
if [ "$StartDate" < "$EndDate" ]
then
Execute script
else
exit 0
fi

Can you please help me on the same?

Thanks and Regards
Nagaraja.

2

What format do you supply the date in? (if it's in epoch that's great, if not you may have to convert to epoch...)

3

Thanks Skrynesaver for your response..!!

I supply date in DD-MON-YYYY format. I am not aware of using epoc in UNIX. Could you please help me on the same?

Note: Don't want to use perl to achieve this.

Thanks and Regards
Nagaraja.

4

Convert to YYYYMMDD and compare numerically.

5

Thanks for your response radoulov..!!

I can convert system date(date) to YYYYMMDD format but not sure how to convert start date and end date to this format. Can you please help on this?

Regards
Nagaraja Akkivalli.