nice(2)                    DG/UX 4.30                     nice(2)



     NAME
          nice - Change priority of a process.

     SYNOPSIS
          int     nice  (value)
          int     value;

     PARAMETERS
          value          A positive or negative value that is to be
                         added to the calling process's priority.

     DESCRIPTION
          The value of value is added to the priority of the calling
          process.  A more positive priority value results in a lower
          level of service from the CPU.

          If the new priority would be greater than 19, the process's
          priority is set to 19.  If the new priority would be less
          than -20, the process's priority is set to -20.

     ACCESS CONTROL
          The effective-user-id of the calling process must be 0
          (super-user) for nice to accept a value for value that is
          less than 0 or greater than 39.  If this condition is not
          met, value will be treated as 0, and errno will be set to
          EPERM.

     RETURN VALUE
          Nice always returns the calling process's priority upon
          completion of the system call.  If an error occurred on the
          call, the process's priority will be unchanged and errno
          will be set to indicate the error.  Errno should be set to
          zero before the call and checked afterwards, regardless of
          the return value.

     EXCEPTIONS
          EPERM          The value of value is negative or greater
                         than 39 and the effective-user-id of the
                         calling process is not 0.

     SEE ALSO
          exec(2).













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