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Comparing current date

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# 1  
Old 11-03-2010
Comparing current date
Hi,

I have start date and end date in the following format. I need to check the current date is greater than the start date and less than the end date. if i use the command date --date "Tue 6:00 AM", it takes next Tues day not the current week's Tues day. Is there a way to get the current Tues day?
start date-end date
Tue 6:00 AM-Wed 10:00 PM

Thanks,
Selva
# 2  
Old 11-03-2010
Quote:
Originally Posted by bharathappriyan
Hi,

I have start date and end date in the following format. I need to check the current date is greater than the start date and less than the end date. if i use the command date --date "Tue 6:00 AM", it takes next Tues day not the current week's Tues day. Is there a way to get the current Tues day?
start date-end date
Tue 6:00 AM-Wed 10:00 PM

Thanks,
Selva
Try:
Code:
date --date 'Tue 6:00 AM 1 week ago'

BTW: Works only with the GNU version of date.
# 3  
Old 11-03-2010
If i run the process on Tuesday, it will take previous week date instead of current Tues day. I need to get current week date.

Thanks.
# 4  
Old 11-03-2010
Is this not what you want?
Code:
$ date --date 'Tue 6:00 AM'
Tue Nov  9 06:00:00 CET 2010
$
$ date --date 'Tue 6:00 AM 1 week ago'
Tue Nov  2 06:00:00 CET 2010
$

# 5  
Old 11-03-2010
No. I need to check the current date is between the start date or not. If i run the command with 1 week ago, the start date will be Tue Nov 2 06:00:00 EDT 2010
but End date will be Wed Oct 27 22:00:00 EDT 2010 which wrong. I hope that i am making you clear.

Thanks,
bharathappriyan
# 6  
Old 11-03-2010
Play around with this example:
Code:
#!/bin/ksh

# Works only with GNU date

d1="Tue Nov 02 22:00:00 EDT 2010"
d2="Fri Nov 05 22:00:00 EDT 2010"
cdate=$(date)

dat1=$(date +%s -d "$d1")
dat2=$(date +%s -d "$d2")
curr=$(date +%s -d "$cdate")

if [ $curr -gt $dat1 -a $curr -lt $dat2 ]
then
  echo Current date is between "$d1" and "$d2"
fi

# 7  
Old 11-03-2010
How about replace Tue (current day) with blank giving "6:00am":

Code:
START="Tue 6:00 AM"
END="Wed 10:00 PM"
DOW=$(date +%a)
START=${START/$DOW/}
END=${$END/$DOW/}
NOW=$(date +%s)
if [ $NOW -ge $(date --date $START +%s) -a $NOW -le $(date --date $END +%s) ]
then
   # Your code here
fi

I know if today is Thursday the compare is with next weeks dates, but that's fine as result (not within range) is still what you want.

--- Edit----
But my solution still dosn't work for Mon 8:00AM-Thu 9:00PM, problem is you can't apply the DOW modifiers to any date except the current date.
What we need is date --date "Monday 9:00AM from 6 days ago"
Last edited by Chubler_XL; 11-03-2010 at 04:48 PM..
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