topic Re: Date format within a script in Operating System - HP-UX

Date format within a script

Simon R Wootton — Tue, 20 Jul 2004 05:02:07 GMT

I'm taking today's date (eg 20/07/2004) and formatting it to a filename

example :

filename=`/bin/date +%y%m%d`

Output : 040720 - CORRECT!

However, I need to create a filename which consists of the date 2 DAYS AGO - ie. 040718

How do I amend the example above to say 'today's date minus 2 days' .....

10 points for the first correct answer!
Simon

Re: Date format within a script

Fred Ruffet — Tue, 20 Jul 2004 05:08:57 GMT

Hi !

Take a look at this one :
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=641246

(don't want to answer the same twice :)

Regards,

Fred

Re: Date format within a script

Michael Tully — Tue, 20 Jul 2004 05:16:36 GMT

I'm not near a system right now, but there is a fantastic tool called 'caljd' by our friend Clay Stephenson. If you use the word 'caljd' in the search engine, there are a pile of examples and in many there is an attachment of the script, which is written in perl. You could write a script and call in Clay's perl script at the appropriate time.

Re: Date format within a script

Michael Tully — Tue, 20 Jul 2004 05:51:31 GMT

Simon, You can get the script from these links.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x1fb33a7b3682d611abdb0090277a778c,00.html

or

http://www.cmve.net/~merijn/
The bottom of the page under "Other ITRC member contibutions".

Also in this thread there is an example right up your alley.
http://forums1.itrc.hp.com/service/forums/bizsupport/questionanswer.do?threadId=144178

Re: Date format within a script

Muthukumar_5 — Tue, 20 Jul 2004 07:40:56 GMT

We can create using shell scipt also. Attached script will do that. Use crontab to run the script everyday after the starting of the day. dayinfo shell variable will contain 2 days back details.

I think i have seen the question today!? okie. see the shell in attachment. it will be useful.

Re: Date format within a script

Muthukumar_5 — Tue, 20 Jul 2004 07:43:03 GMT

oops. fred ruffet gave that link. :-)

Re: Date format within a script

A. Clay Stephenson — Tue, 20 Jul 2004 09:11:45 GMT

This is rather easy but you will need a fairly recent version of caljd.sh (>= 2.22) to truncate to 2-digit years.

PREVDATE=$(caljd.sh -s -y -C $(caljd.sh -p 2))

echo "Two days ago was ${PREVDATE}"

This will work across month and year boundaries as well.

Here is caljd.sh, Version 2.23: