Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Cron Job to Run for 30 minutes

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Cron Job to Run for 30 minutes
# 1  
Old 12-18-2015
Cron Job to Run for 30 minutes
Hello Gurus,

I have a requirement to run a job from cron only for 30 minutes duration daily twice at 8.35 am and 20.35 pm

Can you please suggest how to schedule the job?

Thanks-
Pokhraj
# 2  
Old 12-18-2015
There's nothing you can do to terminate a job after a period of time from within cron. You can either have the job terminate itself using e.g. a timer/counter, or you can schedule a second job after the period to kill the first one.
# 3  
Old 12-18-2015
Hi RudiC,
Quote:
You can either have the job terminate itself using e.g. a timer/counter
Can you please suggest as how to terminate the job itself by using counter/timer?

Thanks-
Pokhraj Das
# 4  
Old 12-18-2015
e.g. (recent) bash has the SECONDS variable; man bash:
Quote:
SECONDS
Each time this parameter is referenced, the number of seconds since shell invocation is returned. ...
So - try
Code:
if [ "$SECONDS" -ge 1800 ]; then exit; fi

# 5  
Old 12-18-2015
Hi RudiC,
I am using ksh..

Code:
TERMSECOND=1800
${ORACLE_HOME}/bin/sqlplus -s "/ as sysdba" <<EOF >> ${LOGFILENAME}
set echo off
--set heading off
set feedback off
set linesize 100
column object_name format a20
select a.sid,a.serial#,c.object_name
from V\$session a,
V\$locked_object b,
DBA_objects c
where a.sid=b.session_id
and b.object_id=c.object_id
and c.object_name='W_GL_BALANCE_A';
exit
EOF

if [ ${TERMSECOND} -ge 1800] then
exit;
fi

The Above is my code which I have modified as suggested by you.
Can you please confirm this is OK.

Thanks-
Pokhraj Das
# 6  
Old 12-18-2015
I definitely did NOT suggest that!

- TERMSECOND is NOT the system variable SECONDS.
- As TERMSECOND is not modified anywhere, that script will be exited when first encountering the if command.
- There are two syntax errors in the if statement: a space missing before, and a semicolon after the ] .
- That script will never come close to 30 min runtime (unless those were incredibly large tables).
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Cron job cannot run the command

Hi, I created this cron job for asterisk to send sms daily to a number #!/bin/sh #custom mod - send sms once a day, at 07:00. CRON_PATH="/etc/asterisk/gw/crontabs_root"; if ! grep 'gsm send sms' $CRON_PATH > /dev/null 2>&1 ;then echo "* 7 * * * asterisk -rx 'gsm send sms 1 7666... (4 Replies)
Discussion started by: jazzyzha
4 Replies

2. Shell Programming and Scripting

Cron Job to Run every 2 minutes

Hello Gurus, I want to schedule a cron job which will run every 2 minutes starts at 11:25 AM and 3:25 AM daily. Can you please suggest as how to schedule the job. Thanks- Pokhraj Das (2 Replies)
Discussion started by: pokhraj_d
2 Replies

3. Shell Programming and Scripting

Cron job - Need to run Cron every quarter at particular time

Hi, 1) If some job supposed to run on 1st of every month at 7 AM In cron job when we have a blackout on the 1st ( i.e when 1st falls on a sunday ) how can we make the job run the next business day? 2) How can we run a job on 25th of every quarter 7 AM(jan,apr,jul,oct) And if 25th... (5 Replies)
Discussion started by: System Admin 77
5 Replies

4. Shell Programming and Scripting

Cron doesn't run job in background

Hi, First of all merry christmas and Happy holidays to all :D My situation is as below, When a backup job runs on a mainframe server, it creates a 0byte file on a network drive which is accessible through linux Linux server : Red Hat Enterprise Linux Server release 5.3 Beta (Tikanga) File... (6 Replies)
Discussion started by: sam05121988
6 Replies

5. UNIX for Advanced & Expert Users

Use cron to run job every other week

my colleague was asking about this: is there a way to run a cron job biweekly, like a script five.sh to run every *OTHER* Friday within November its part about every other Friday we cant find any documentation. thx L (8 Replies)
Discussion started by: lydiaflamp
8 Replies

6. Solaris

How to setup a cron job to run every 45 minutes in Solaris 5.10

How to setup a cron job to run every 45 minutes in Solaris 5.10 (9 Replies)
Discussion started by: reyazan
9 Replies

7. Shell Programming and Scripting

Cron job for every five minutes and between hours

Hi I need to run a script every five minutes and it should run between 07-15 hours all days. How i can achieve this... i tried like this */5 07-15 * * * /scripts/CreateFtpData.sh It throws an error... (1 Reply)
Discussion started by: aemunathan
1 Replies

8. UNIX for Advanced & Expert Users

Need help with a script run by a cron job.

Hi, new to this forum and not sure if this is the right place to post. I'm new to cron jobs and scripts, and I need some help with a script to be used with a cron job. I already have a bot set up at a certain website address and need a script that the cron job will load every day that tells it to... (1 Reply)
Discussion started by: klawless
1 Replies

9. Shell Programming and Scripting

Does not run via cron job

I have a perl script, when I ran manually it works perfect. I check the permissions which are fine. How can I find out why it is not running? how can I setup a log to check. I am running it on solaris 9. It compares multiple files, SCP and then send out an e-mail. As I said when I ran it... (2 Replies)
Discussion started by: amir07
2 Replies

10. UNIX for Advanced & Expert Users

Run cron job problem

I have the below crontab job that it will run at every 7:00am - 10:00am , it work fine , now if I want to skip to run the crontab job at a specific time , eg. I want the script not to run at next Monday 8:00am ( only skip this time , other time is normal ) , how can I make it ? is it possible ?... (3 Replies)
Discussion started by: ust
3 Replies
Login or Register to Ask a Question