Accrual to Clinical Trials
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Note Box
titleATD service

The ATD service is installed along with the at command. This service is required to be running for the at command to work

Install at by using your packaged manager. For example, if you are using yum as a package manager, type in:

Code Block
# yum install at



  1. Install at by typing in: yum install at
  2. Start the atd daemon by typing in: /etc/init.d/atd start
  3. Make sure atd is set to start each time the server is rebooted