capturing f1,f2, key presses instantlly

hello all, do any one of you know how can i capture f1 and f2 keypresses, and responding to them instantly without pressing enter ?? thanks

C# on linux

hello all, Do any one know how can i run C# on linux, and if i can use the visual studio editor. and How please thanks

perl interactive system commands

elslam 3alikom, i wanna run an interactive system command through my program for example i wanna add a user with its password that is given in the program not by the user, do any one here have any idea how can i do so in perl i tried quote: --