I don't follow you, I'm afraid. If you want to run a scipt file (or any other executable from the current directory) then you'll have to type
The reason is that '.' (DOT, current directory) is not part of the search path for executables. It's generally considered a bad idea to have current directory in the search path for executables, since it means that you may run different programs depending on current directory. The root user should definitely NOT have current directory in his/her path.
If you really think that you want it anyway, put these commands in your .bash_profile file:
This adds current directory to the end of the search path. (This solution probably looks different in some other shell, though.)
To change default shell in Fedora; from the start menu, select 'System Settings > Users and Groups'