RUN Command 1 RUN Execute an operating system command. RUN data_ref data_ref The RUN command executes an operating system command. When using the GNOME runner, commands will be executed on the client PC, while when running in the web environment (browser), commands will be executed on the server where the run Web Service (xobasrund) is running. Execution on 4GL level will wait until the command has finished. data_ref any data reference as well as hard coded strings. . . . . . . RUN "/opt/scripts/data_synch.sh" . . . . . . None.