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Cronjob setting

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Operating Systems Linux Red Hat Cronjob setting
# 1  
Old 03-19-2012
Cronjob setting
Hi there

There's a script I would like to run daily every 5 minutes and this job should restart every 12:03AM so it would append to a new file with the following day date format instead of running and updating continuously into one log. I am not sure of the syntaxing, what I did was to set it to run daily 1-31..any idea on how to set it to run every 5 mins and refresh at 12:03 am?

Code:
##Run memory report every 5 mins daily
*/5 * 1-31 * * /usr/local/bin/MEM_Report/MEM_daily_run

Well, it doesn't have to be exactly 12:03 AM, its just that I want a new report with the following day's date format

I was thinking of
Code:
 */5 0-23 * * *

maybe I should wait out till tomorrow so I can see how the reports come out..I started the script just now..cron confuses me every time Smilie
Last edited by hedkandi; 03-19-2012 at 01:52 AM.. Reason: corrections
# 2  
Old 03-19-2012
what is the contents of your script?
maybe you can set name of the log as today's date (or yest) in script instead of job reset.
# 3  
Old 03-20-2012
Hi there ygemici

I did the second setting of */5 23 * * * and that gave me a new report this morning at 11 am...so whys that! I want it to start at midnight..
Code:
[root@espcrmtestapp 03]# ls -lrt
total 956
-rw-r--r--. 1 root root 512101 Mar 19 23:55 2012-03-19
-rw-r--r--. 1 root root 453702 Mar 20 11:00 2012-03-20

This is the script

Code:
#!/bin/bash

##Run Daily MEM report

MEM_REPORT="/var/log/MEM_Report/$(date +'%m')"

MEM_DAILY="/var/log/MEM_Report/$(date +'%m')/$(date +'%F')"

cd ${MEM_REPORT}

ps aux| sort -k4 -r | head -10 >> "${MEM_DAILY}"

Last edited by hedkandi; 03-20-2012 at 12:05 AM.. Reason: added code
# 4  
Old 03-20-2012
because midnight is zero, not 23
# 5  
Old 03-20-2012
So if I were to run the cron every 5 minutes and refresh at midnight, how do I do it?
# 6  
Old 03-20-2012
What timezone are you in when you are at the command prompt?
Code:
echo $TZ
date

And can you make a one-off test cron to find out the value of $TZ and the value of date when running from cron.


Please also post what Operating System and version you have.
# 7  
Old 03-20-2012
Quote:
Originally Posted by hedkandi
Hi there ygemici

I did the second setting of */5 23 * * * and that gave me a new report this morning at 11 am...so whys that! I want it to start at midnight..
Code:
[root@espcrmtestapp 03]# ls -lrt
total 956
-rw-r--r--. 1 root root 512101 Mar 19 23:55 2012-03-19
-rw-r--r--. 1 root root 453702 Mar 20 11:00 2012-03-20

This is the script

Code:
#!/bin/bash

##Run Daily MEM report

MEM_REPORT="/var/log/MEM_Report/$(date +'%m')"

MEM_DAILY="/var/log/MEM_Report/$(date +'%m')/$(date +'%F')"

cd ${MEM_REPORT}

ps aux| sort -k4 -r | head -10 >> "${MEM_DAILY}"

hi hedkandi,
your script is seem OK.
but as already mentioned by @methly, system date settings and cron may use different timezone information(TZ).
check if your system (redhat derivative )
Code:
# cat /etc/crontab

or solaris
Code:
# grep ^TZ /etc/TIMEZONE

check your user's profile file that runs this cronjob
both of them are differ?


add the cronjob maybe like this
Code:
*/5 * * * * /usr/local/bin/MEM_Report/MEM_daily_run

Code:
 # cat /usr/local/bin/MEM_Report/MEM_daily_run
#!/bin/bash
## MEMORY USAGE SCRIPT
LOGF="/var/log/MEM_Report" ; cd "$LOGF" &>/dev/null || exit 1
if [ ! -d "$(date +'%m')" ] ; then
mkdir $(date +'%m');cstat=$?
else cstat=0 ; fi
if [ $cstat -eq 0 ] ; then
MEM_DAILY="$(date +'%m')/$(date +'%F')"
echo -e "\t\t\t [$(date "+%F] -->  %02k:%M:%S")">>"$MEM_DAILY"
ps aux| sort -k4 -r | head -10 >>"$MEM_DAILY"
echo "">>"$MEM_DAILY"
else
echo "Check Permission on the $LOGF folder!!"
exit 1
fi

This User Gave Thanks to ygemici For This Post:
hedkandi
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