The report RSBDCOS0 enable you to execute operating system commands from the SAP level. You can directly execute the command without log in to the operating system.
1. Execute SE38 and put RSBDCOS0 in the program field. Click on execute.
2. In this example, i run command to ping www.google.com. As you can see, the result is the same like when you are running on operating system level. You can try to run other commands. Just make sure to check current operating system running so that you are executing the right command.