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Full Discussion: Weird crontab problem
Operating Systems Solaris Weird crontab problem Post 302138793 by RobSand on Wednesday 3rd of October 2007 12:22:36 PM
Old 10-03-2007
Weird crontab problem
Greetings To All!

I am running Solaris 10 in a sparc environment.

Here is the deal:

In /var/spool/cron/crontabs, there is a cron user named "sys". If I do a
crontab -l sys, it returns:

# 0 * * * 0-6 /usr/lib/sa/sa1
# 20,40 8-17 * * 1-5 /usr/lib/sa/sa1
# 5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A

I have tried to modify the above job by changing the first line...and uncommenting all 3 lines, so that it will read the following at run time:

0,5,10,15,20,25,30,35,40,45,50,55 * * * 0-6 /usr/lib/sa/sa1
20,40 8-17 * * 1-5 /usr/lib/sa/sa1
5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A

I am making the above mentioned modification as user "sys", who owns this particular cron job.

The problem is this:

For some weird, unexplainable reason, the modified cron job:

0,5,10,15,20,25,30,35,40,45,50,55 * * * 0-6 /usr/lib/sa/sa1
20,40 8-17 * * 1-5 /usr/lib/sa/sa1
5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A

will always revert back to its original default to read:

# 0 * * * 0-6 /usr/lib/sa/sa1
# 20,40 8-17 * * 1-5 /usr/lib/sa/sa1
# 5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A

Anyone have any ideas what could be causing this? This one has me scratching my head...

Your replies are greatly appreciated!

Sincerely

RobSand
 

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LEARN ABOUT REDHAT

sa1

SA1(8)								Linux User's Manual							    SA1(8)

NAME

       sa1 - Collect and store binary data in the system activity daily data file.

SYNOPSIS

       /usr/lib/sa/sa1 [ interval count ]

DESCRIPTION

       The  sa1 command is a shell procedure variant of the sadc command and handles all of the flags and parameters of that command. The sa1 com-
       mand collects and store binary data in the /var/log/sa/sadd file, where the dd parameter indicates the current day. The interval and  count
       parameters  specify  that  the  record  should be written count times at interval seconds. If you do not specify these parameters, a single
       record is written.

       The sa1 command is designed to be started automatically by the cron command.

EXAMPLES

       To create a daily record of sar activities, place the following entry in your root or adm crontab file:

       0 8-18 * * 1-5 /usr/lib/sa/sa1 1200 3 &

FILES

       /var/log/sa/sadd
	      Indicate the daily data file, where the dd parameter is a number representing the day of the month.

AUTHOR

       Sebastien Godard <sebastien.godard@wanadoo.fr>

SEE ALSO

       sar(1), sadc(8), sa2(8), mpstat(1), iostat(1), vmstat(8)

       http://perso.wanadoo.fr/sebastien.godard/

Linux								   DECEMBER 1999							    SA1(8)
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