Script locations alone not sufficient to make scripts work as expected.

[atcw]

Just dropping the absolute location of a script into one of the textboxes did not work for me. There was no visible effect.
Reading the source and understanding the Datasource - Engine : Executable i found that it tries to start a KProcess with the contents of the script-box verbatim.
Unfortunately this does not work because the system itself does not interpret the .sh shell files and does not start them with their interpreter (i.e./e.g. bash) even if there is a shebang in the files. However prefixing the textbox-entries with "bash " for .sh files solved it for me. Since Plasmoids are geared towards dekstop users maybe documenting this behaviour or find a fitting interpreter.