I managed to get as far as optirun glxgear, which worked perfectly, but I am unable to define settings for a specific shell script.

In its wiki it says this:

optirun [options] <application> [application-parameters]

and I don't know what option has to be nor the application-parameter. (I'm really new) If my file is /home/hon/hon.sh, how can I execute it via terminal?

If I just type optirun hon or optirun hon.sh it shows this error:

/usr/bin/vglrun: 296: exec: hon: not found

there I try to find the file /usr/bin/vglrun. How can I run the shell scripts I need to run?