nice(1)                    DG/UX 4.30                     nice(1)



     NAME
          nice - run a command at a higher or lower priority

     SYNOPSIS
          nice [ -increment ] command [ arguments ]

     DESCRIPTION
          Nice executes command with a lower or higher CPU scheduling
          priority.  Scheduling priority numbers are such that the
          higher the number, the lower the priority.  A process at a
          lower priority will probably execute more slowly than a
          process with a higer priority.  The highest priority level
          is -20.  The lowest is 19.

          By default, nice executes command at a lower priority (which
          is your shell's priority plus 10).

          If you provide an increment argument, the system executes
          your command at a priority that much higher or lower than
          your current priority.  For example, with an argument of
          -10, nice will execute your command at your current priority
          plus 10.  With an argument of --10, nice will execute your
          command at your current priority minus 10.  If your shell's
          normal priority is 0 and you invoke nice with an argument of
          -10, nice executes your command at a priority of 10.

          Only a superuser can raise a process's priority by passing
          nice a negative number.  If a non-superuser invokes nice
          with a negative number, nice assumes -0 as the argument.

          If you attempt to execute a command at a priority greater
          than 19, nice executes it at 19.  If you attempt to execute
          a command at a priority less than -20, nice executes it at
          -20.  You cannot interrupt a process running at a very high
          priority (such as -20).  To interrupt such a process, use
          the renice(1) command first to lower the process's priority.

          System runtime conditions determine exactly how priority
          affects execution speed.  To change the priority of a
          process that is already running, use the renice(1) command.

          Note that this command is not the same as the built-in
          version of nice that you get if you use the csh.  See
          csh(1).  If you use the csh but prefer to use this version
          of nice, invoke this command with its full pathname,
          /usr/bin/nice.

     EXAMPLES
          $ nice -19 who

          nice will execute the who command at a lower CPU priority
          (that is, at a priority 19 points lower than your shell's



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     nice(1)                    DG/UX 4.30                     nice(1)



          current priority).

          $ nice --10 who

          If you are the superuser, nice will execute the who command
          at a higher (10 points higher) CPU priority.  If you are not
          superuser, nice executes the command at your current
          priority.

          $ nice who

          nice will execute who at a priority that is 10 points lower
          than your shell's priority.

     SEE ALSO
          csh(1), nohup(1), renice(1), sh(1), getpriority(2), nice(2),
          setpriority(2).

     DIAGNOSTICS
          Nice returns the exit status of the subject command.



































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