topic Re: Shell Script - Yesterday's date in Operating System - HP-UX

Shell Script - Yesterday's date

Tracey — Wed, 28 Nov 2001 16:33:23 GMT

Could someone please share with me the easiest way to find out yesterday's date (today-1)in a shell script?

Thanks,
Tracey

Re: Shell Script - Yesterday's date

Alan Riggs — Wed, 28 Nov 2001 19:01:37 GMT

TZ=GMT+34 date

You will have to play with the time offset to match your particular timezone.

Re: Shell Script - Yesterday's date

harry d brown jr — Wed, 28 Nov 2001 19:01:56 GMT

Follow this thread:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,11866,0x6901c7af36b7d5118ff10090279cd0f9,00.html

live free or die
harry

Re: Shell Script - Yesterday's date

Alan Riggs — Wed, 28 Nov 2001 19:02:46 GMT

oops:

typo 34 should be 23

Re: Shell Script - Yesterday's date

A. Clay Stephenson — Wed, 28 Nov 2001 19:03:10 GMT

Hi Tracey:

Try this:
YESTERDAY=$(caljd.sh $(caljd.sh -p 1))
echo "Yesterday = ${YESTERDAY}"

Use the attached caljd.sh

Regards, Clay

Re: Shell Script - Yesterday's date

Mike Hassell — Wed, 28 Nov 2001 19:11:55 GMT

Tracey,

Or you can take the simple route:

#!/bin/sh

today=`date +%d`

yesterday=`expr $today - 1`

echo $yesterday

Of course this may not be as efficient as the others listed above.

-Mike

Re: Shell Script - Yesterday's date

Craig Rants — Wed, 28 Nov 2001 19:30:43 GMT

Try this out

DATE=`TZ=MET+24 date +%d`
echo $DATE

Good Luck,
C

Re: Shell Script - Yesterday's date

Jeffrey S. Sims — Wed, 28 Nov 2001 21:15:18 GMT

In perl you can try

perl -e 'print scalar localtime (time -1*86400),"\n"' and you can replace the 1 with whatever number you want if you need more than one day ago.

Hope it helps

Re: Shell Script - Yesterday's date

Craig Rants — Wed, 28 Nov 2001 21:22:52 GMT

Tracey,
Thanks for the points, you pushed me over the top and presented me with what everyone says is the coolest hat to have. Thanx.

C

Re: Shell Script - Yesterday's date

Dave La Mar — Thu, 29 Nov 2001 23:57:53 GMT

Another take on Mike's -

let yesterday=`date +%d`-1
dl