Cron Job to Run every 2 minutes Post: 302962869

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Top Forums Shell Programming and Scripting Cron Job to Run every 2 minutes Post 302962869 by Don Cragun on Saturday 19th of December 2015 10:49:26 PM

12-19-2015

Registered User

Quote:

Originally Posted by pokhraj_d

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

I don't understand the problem. If a job is supposed to start every two minutes what difference does it make when the first one starts? And, why do you need two jobs that run every two minutes? Why not just run one script every two minutes that fires up the two script you want to run?

On systems where cron/crontab allows repetitions using /, it would seem that the following crontab entries should work:

Code:

1/2 * * * * /path/to/your/0325script
1/2 * * * * /path/to/your/1125script

and on other systems, the longer (standard) specification requesting the same behavior would be:

Code:

1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59 * * * * /path/to/your/0325script
1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59 * * * * /path/to/your/1125script

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LEARN ABOUT OPENSOLARIS

disown

disown(1)							   User Commands							 disown(1)

NAME

       disown - ksh93 built-in function to disassociate a job with the current shell

SYNOPSIS

       disown [job ...]

DESCRIPTION

       The  ksh93  disown command prevents the current shell from sending a HUP signal to each of the specified jobs when the current shell termi-
       nates a login session.

       If job is omitted, disown sends the HUP signal to the most recently started or stopped background job.

OPERANDS

       The following operands are supported:

       job    Specifies the job or jobs on which disown operates.

	      Specify job as one of the following:

	      number	  Refers to a process ID.

	      -number	  Refers to a process group ID.

	      %number	  Refers to a job number.

	      %string	  Refers to a job whose name begins with string.

	      %?string	  Refers to a job whose name contains string.

	      %+ or %%	  Refers to the current job.

	      %-	  Refers to the previous job.

EXIT STATUS

       0     Successful completion.

       >0    One or more specified jobs does not exist.

EXAMPLES

       Example 1 Disowning a Job

       The following example disowns job 1:

	 example% disown %1

AUTHORS

       David Korn, dgk@research.att.com

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Uncommitted		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       bg(1), jobs(1), ksh93(1), wait(1), attributes(5)

SunOS 5.11							    18 Apr 2007 							 disown(1)

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