Use exec built-in function.
From the SAP Data Services Reference Guide:
exec(<command_file, parameter_list, flag>)
with <command_file>:
A string that indicates the location and file name to execute. This string is relative to the Job Server location. It can be an absolute or relative path. The files and directories in the path must be accessible from the Job Server's computer.
The <command_file> can be a Windows batch file, a UNIX shell script, or a binary executable. To run other interpreted scripts, the <command_file> must be the name of the command interpreter (e.g., 'perl') and the script must be the first parameter in the <parameter_list> .