ok Sure. Actually, we are using Control M jobs to run this script on every hour. By using this script, we are trying to get the time information of the jobs in a day. For example, Job 1 runs on 9 am est, Job 2 runs on 10 am est, job 3 runs on 10.15 am est. I have written the script to get the timing of those Control M jobs. this script is running on every hour to get the information. If I am running this script at morning 9 am est, it will send the time for job 1. the rest of the jobs not yet completed. again, I am running the same perl script on 10 am est, at that time job 2 completed and send the both job 1 and 2 information. again, I am running the script at 11 am est, it will return the information for Job 1, 2 and 3 as well. So, all jobs are completed and I received the enough information from my perl script. But, here the perl script will run on 12 pm est also. at that time, it will send those 3 jobs information again(Job 1, job 2 and job 3). I don't need the information from 12 pm est. Here, I can't schedule the job till 11 am only. why because, these jobs(job 1, 2 and 3) may extend more than 12 pm est also. We are not sure about when it will be complete. Once the consolidated information from those three jobs(job 1, 2 and 3), I should trigger a mail at till first time of all information. 2nd time onwards I don't need any information for the day. Please advise me on this.