Wise Monks; I have hundreds of perl scripts that are executed via command, for a better use of users, I built a screen for windows in tk. I would like to make a screen where the user searches for the file, search for a certain script to run. The output of the file will be in the same folder as the original file.

Ok, so which part are you having trouble with? How do I post a question effectively?

If this is about running external commands, see Calling External Commands More Safely. For external programs that execute quickly, I recommend IPC::Run3, and for long-running external programs that you need to monitor the output of, see IPC::Run (though Tk may have its own module for that kind of thing, I'm not sure). If you need to manipulate filenames, see Path::Class (or the core File::Spec::Functions), and if you need to change the current working directory, see File::pushd (or the core chdir).