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Full Discussion: How to calculate specific hours between 2 dates
Top Forums Shell Programming and Scripting How to calculate specific hours between 2 dates Post 302218491 by joeyg on Friday 25th of July 2008 10:07:13 AM
Old 07-25-2008
Tools just thinking out loud on this - no real code yet
Still some quirks below, like adjusting start & end times to 900 or 1800 (your input example was outside this range). However, perhaps this gives you a basis to begin thinking about a process.


Code:
curr_day = day1
while [ curr_day .le day2 ]
  do
  if [ day_of_wk in {MTWTF} ]
    then
#assume full day; hours in hundreds; over-write as needed
    day_hr=900
    if [ curr_day .eq day1 ]
      then
      day_hr=(1800 - day1(hr))
    fi
    if [ curr_day .eq day2 ]
      then
      day_hr=(day2(hr) - 900)
    fi
    hr_tot=(hr_tot + day_hr)
  fi
  curr_day=(curr_day+1)
done

 

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LEARN ABOUT NETBSD

sip

SIP(4)							   BSD Kernel Interfaces Manual 						    SIP(4)

NAME

     sip -- SiS 900-based Ethernet driver

SYNOPSIS

     sip* at pci? dev ? function ?

     Configuration of PHYs is also necessary.  See mii(4).

DESCRIPTION

     The sip device driver supports Ethernet interfaces based on the Silicon Integrated Systems SiS 900, SiS 7016, and National Semiconductor
     DP83815 Ethernet chips.

     The SiS 900 is found on many motherboards featuring SiS chipsets, and on some embedded systems, and has a built-in PHY.  The SiS 7016 is an
     older version of the chip, which uses an external PHY.

     The National Semiconductor DP83815 is found on NetGear FA-311 and FA-312 Ethernet boards, and has a built-in PHY.

SEE ALSO

     arp(4), ifmedia(4), mii(4), netintro(4), pci(4), ifconfig(8)

HISTORY

     The sip driver first appeared in NetBSD 1.5.

AUTHORS

     The sip driver was originally written by Jason R. Thorpe for Network Computer, Inc.

     It has since been modified by Jason R. Thorpe <thorpej@NetBSD.org> and Allen Briggs <briggs@NetBSD.org>.

BSD
								   May 17, 2001 							       BSD
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