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Top Forums Shell Programming and Scripting crontab entry to run every last day of the month Post 74310 by rahul123_libra on Thursday 9th of June 2005 02:30:46 AM
Old 06-09-2005
Tools

Have cron run a script on days 28, 29, 30 and 31 of every month.
Create two variables in the script, one containing today's day of the
month and another containing tomorrow's day of the month:

Code:
 TODAY=`date +%d`
 TOMORROW=`date +%d -d "1 day"`

 # See if tomorrow's day is less than today's
 if  [  $TOMORROW  -lt  $TODAY  ];  then
         echo  "This is the last day of the month"
 #       Do stuff...
 fi

Smilie

Moderator's Comments:
Mod Comment Code tags please, thanks.

Last edited by zaxxon; 10-20-2011 at 04:54 AM.. Reason: code tags
 

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CAL(1)							    BSD General Commands Manual 						    CAL(1)

NAME
cal -- displays a calendar SYNOPSIS
cal [-smjy13] [[[day] month] year] DESCRIPTION
Cal displays a simple calendar. If arguments are not specified, the current month is displayed. The options are as follows: -1 Display single month output. (This is the default.) -3 Display prev/current/next month output. -s Display Sunday as the first day of the week. -m Display Monday as the first day of the week. -j Display Julian dates (days one-based, numbered from January 1). -y Display a calendar for the current year. -V Display version information and exit. A single parameter specifies the year (1 - 9999) to be displayed; note the year must be fully specified: ``cal 89'' will not display a calen- dar for 1989. Two parameters denote the month (1 - 12) and year. Three parameters denote the day (1-31), month and year, and the day will be highlighted if the calendar is displayed on a terminal. If no parameters are specified, the current month's calendar is displayed. A year starts on Jan 1. The first day of the week is determined by the locale. The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd of September. By this time, most countries had recognized the ref- ormation (although a few did not recognize it until the early 1900's.) Ten days following that date were eliminated by the reformation, so the calendar for that month is a bit unusual. HISTORY
A cal command appeared in Version 6 AT&T UNIX. OTHER VERSIONS
Several much more elaborate versions of this program exist, with support for colors, holidays, birthdays, reminders and appointments, etc. For example, try the cal from http://home.sprynet.com/~cbagwell/projects.html or GNU gcal. AVAILABILITY
The cal command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. BSD
June 6, 1993 BSD
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