11-27-2009
Shell script to generate daily crontab entries between to specific dates
Hi,
I am currently writing a shell script to enter daily reoccurring jobs into the crontab. I want to be able to specify any two dates for which I want these daily jobs to run between.
Below is an example of what I need to be written to crontab.
# Give a start day of 21/10/2009 09:00 and end day of 23/10/2009 09:00, we need the following crontab entries:
# 00 09 22 10 0-7 script.sh 10/21/2009 10/22/2009
# 00 09 23 10 0-7 script.sh 10/22/2009 10/23/2009
Currently, I am assuming that the two date span within a month, but I want to extend this so that the dates can span across any time frame.
How would I go about running through all the days between 2 particular dates?
Any help would be much appreciated.
Thanks,
Jess
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SA2(8) Linux User's Manual SA2(8)
NAME
sa2 - Write a daily report in the /var/log/sysstat directory.
SYNOPSIS
/usr/lib/sysstat/sa2
DESCRIPTION
The sa2 command is a shell procedure variant of the sar command which writes a daily report in the /var/log/sysstat/sardd file, where the
dd parameter indicates the current day. The sa2 command handles all of the flags and parameters of the sar command.
The sa2 command is designed to be started automatically by the cron command.
EXAMPLES
To run the sa2 command daily, place the following entry in your root or adm crontab file:
5 19 * * 1-5 /usr/lib/sysstat/sa2 -A &
This will generate a daily report called /var/log/sysstat/sardd It will also remove reports more than one week old.
Debian note
The Debian sysstat package has already placed such an entry in your system crontab. Please refer to the /usr/share/doc/sys-
stat/README.Debian file for details.
FILES
/var/log/sysstat/sardd
Indicate the daily report file, where the dd parameter is a number representing the day of the month.
AUTHOR
Sebastien Godard (sysstat <at> orange.fr)
SEE ALSO
sar(1), sadc(8), sa1(8), sadf(1)
http://pagesperso-orange.fr/sebastien.godard/
Linux AUGUST 2010 SA2(8)