How to increase the priority for a task in linux machine?
What I've Done So Far: After small research i found that we can increase the priority to a task using NICE command and if we want to increase the priority for an existing task, then we can also use RENICE command
But my problem:
In some tutorials its mentioned that, NICE values vary from 0 to 99, But in some tutorials states that NICE values vary from -20 to 19. Which one is correct?
How to increase the NICE value for an GUI task? If we are doing copy using terminal then I can increase its priority using NICE command But How to increase the priority of a task done using GUI(for ex: copying files from USB to System through GUI)
Is that possible to set the priority of a task for the life time? I want to set highest priority for "COPYING FILES IN SYSTEM(using GUI) permanently
Is there anyone who can help me to set the highest priority for a task(task done through GUI)?