Date Intervals Post: 79663

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Top Forums Shell Programming and Scripting Date Intervals Post 79663 by yongho on Friday 29th of July 2005 12:39:38 PM

07-29-2005

Registered User

Date Intervals

I posted a question on date intervals about a month back asking about how I could be able to go about a user entering the starting year/month/day and an ending year/month/day and then the script automatically cycling through each day of each month of each year that the user has specified.

I checked out Perderabo's datecalc script and it was helpful but still not exactly what I needed.

I've thrown together some code today but I know that it's not going to work, I just need some suggestions on how I can complete this.

Code:

#!/bin/ksh

#                     Ja Fe Ma Ap My Jn Jl Au Se Oc No De
set -A DaysInMonth xx 31 28 31 30 31 30 31 31 30 31 30 31

isLeapYr=`date.isLeapYr.ksh`
if (( isLeapYr==1 )); then
    DaysInMonth[2]=29
fi

while (( start_date_Y < end_date_Y )); do

    while (( start_date_m < end_date_m )); do

        while (( start_date_d < ${DaysInMonth[${start_date_d}]} )); do
        (( start_date_d=start_date_d+1 ))
        done

        (( start_date_m=start_date_m+1 ))
    done

    (( start_date_Y=start_date_Y+1 ))
done

Some of my concerns are:
Take a look at the start_date_m < end_date_m loop (the 2nd while loop). What if the starting month is 4 and the ending month is 10 (but the user meant the 10 month of the 2nd year) then the loop will break prematurely.

How do I adjust for this?

I'm continuuing to work on this script, so I will keep this post updated.

Last edited by yongho; 07-29-2005 at 01:46 PM..

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rotatelogs

rotatelogs(8)						      System Manager's Manual						     rotatelogs(8)

NAME

       rotatelogs - rotate Apache logs without having to kill the server

SYNOPSIS

       rotatelogs logfile rotationtime [offset]

DESCRIPTION

       rotatelogs is a simple program for use in conjunction with Apache's piped logfile feature, which can be used like this:

       CustomLog "|bin/rotatelogs /var/logs/logfile 86400" common

       This  creates  the files /var/logs/logfile.nnnn where nnnn is the system time at which the log nominally starts (this time will always be a
       multiple of the rotation time, so you can synchronize cron scripts with it).  At the end of each rotation time (here after 24 hours) a  new
       log is started.

OPTIONS

       logfile
	      The  path plus basename of the logfile.  If logfile includes any Otherwise, the suffix .nnnnnnnnnn is automatically added and is the
	      time in seconds.	Both formats compute the start time from the beginning of the current period.

       rotationtime
	      The rotation time in seconds.

       offset The number of minutes offset from UTC.  If omitted, zero is assumed and UTC is used.  For example, to use local time in the zone UTC
	      -5 hours, specify a value of -300 for this argument.

PORTABILITY

       The  following logfile format string substitutions should be supported by all strftime(3) implementations, see the strftime(3) man page for
       library-specific extensions.

       %A     full weekday name (localized)

       %a     3-character weekday name (localized)

       %B     full month name (localized)

       %b     3-character month name (localized)

       %c     date and time (localized)

       %d     2-digit day of month

       %H     2-digit hour (24 hour clock)

       %I     2-digit hour (12 hour clock)

       %j     3-digit day of year

       %M     2-digit minute

       %m     2-digit month

       %p     am/pm of 12 hour clock (localized)

       %S     2-digit second

       %U     2-digit week of year (Sunday first day of week)

       %W     2-digit week of year (Monday first day of week)

       %w     1-digit weekday (Sunday first day of week)

       %X     time (localized)

       %x     date (localized)

       %Y     4-digit year

       %y     2-digit year

       %Z     time zone name

       %%     literal `%'

SEE ALSO

       httpd(8)

								    March 2001							     rotatelogs(8)