Accrual to Clinical Trials
Space shortcuts
Space Tools
Skip to end of metadata
Go to start of metadata

You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 12 Next »



The Patient List Viewer invokes the at commands to place jobs in the background. This frees up the UI while long queries are running.

at command

Some Linux systems do not have the at command installed.

ATD 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:

# yum install at

To start the ATD services on newer systems, type in:

# systemctl start atd


For older systems type in:

# /etc/init.d/atd start




  • No labels