nice command and nice() system call


 
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# 1  
Old 11-12-2006
nice command and nice() system call

Hi I want to implement the nice command in the shell that I am building. I came to know that there is a corresponding nice() system call for the same. But since I will be forking different processes to run different commands typed on the command prompt, is there any way I can make a command execution call nice() first to adjust its priority?

eg nice 5 cp x y

makes cp increment its priority by 5

how can I make the execution of cp call nice() ?
# 2  
Old 11-12-2006
One way:
Code:
 pid=fork();
 if(pid==0) 
 {
     nice();
     -- exec cp command here
 }

# 3  
Old 11-12-2006
hey thanks a lot jim.
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