Hi,
I am currently using Kommander to create a GUI form, which can be used to call the bash scripts that i have created. However, i am still not sure of how the "progress bar" functions. For example, i have some bash script files inside a folder, and how can i make the progress bar move accordingly to the number of bash script files that have been run finish. Any one can give me examples? Thanks a lot. Sorry for my english.

I would recommend checking kde-apps.org to see if there are other Kommander scripts that can give you a hint on how to do it.