nice(1)

     NAME
          nice - run a program with modified scheduling priority

     SYNOPSIS
          nice [-n adjustment] [-adjustment] [--adjustment=adjustment]
          [--help] [--version] [command [arg...]]

     DESCRIPTION
          This documentation is no longer being maintained and may be
          inaccurate or incomplete.  The Texinfo documentation is now
          the authoritative source.

          This manual page documents the GNU version of nice.  Note
          that most shells have a built-in command by the same name
          and with similar functionality.

          If no arguments are given, nice prints the current
          scheduling priority, which it inherited.  Otherwise, nice
          runs the given command with its scheduling priority
          adjusted.  If no adjustment is given, the priority of the
          command is incremented by 10.  The superuser can specify a
          negative adjustment.  The priority can be adjusted by nice
          over the range of -20 (the highest priority) to 19 (the
          lowest).

        OPTIONS
          -n adjustment, -adjustment, --adjustment=adjustment
               Add adjustment instead of 10 to the command's priority.

          --help
               Print a usage message on standard output and exit
               successfully.

          --version
               Print version information on standard output then exit
               successfully.