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Time Difference

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# 1  
Old 12-10-2009
Time Difference

Hi Experts...

I want to calculate the time difference between two date-time values (using ksh). It can return the difference in hours (or whatever..)

For eg: time_diff "09/12/2009 12:30" "09/10/2009 12:30" should return 1464 hours...

$time_diff "09/12/2009 12:30:00" "09/10/2009 12:30:00"
$time_diff "09/12/2009 13:36:09" "09/12/2009 13:30:00"

# 2  
Old 12-10-2009

Use 3600, if you need to see in hours. 60 , if you need to se in minutes

echo $var1
09/12/2009 12:30:00
echo $var2
09/12/2009 13:30:00

echo "(`date +%s -d"$var2"` - `date +%s -d"$var1"`)/3600" | bc

# 3  
Old 12-10-2009
Hi !
I am using ksh and its giving this error::
date: bad format character - s

Please help...
# 4  
Old 12-10-2009
The format option 's' is only available with GNU date, so it's mostly Linux specific. But you might be able to use Perderabos datcalc script with a few adaptions.
# 5  
Old 12-10-2009
Originally Posted by PRKS
Hi !
I am using ksh and its giving this error::
date: bad format character - s

Please help...
Try this link, as there is no quick solutions available in unix.
# 6  
Old 12-10-2009
If you can write script in PERL, then look at this module which can help you in identifying the difference between date: Date::Manip -

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