nice/nice.1

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  34 .\"     @(#)nice.1      8.1 (Berkeley) 6/6/93
  35 .\"
  36 .Dd June 6, 1993
  37 .Dt NICE 1
  38 .Os
  39 .Sh NAME
  40 .Nm nice
  41 .Nd execute a utility with an altered scheduling priority
  42 .Sh SYNOPSIS
  43 .Nm
  44 .Op Fl n Ar increment
  45 .Ar utility
  46 .Op Ar argument ...
  47 .Sh DESCRIPTION
  48 .Nm
  49 runs
  50 .Ar utility
  51 at an altered scheduling priority.
  52 If an
  53 .Ar increment
  54 is given, it is used; otherwise
  55 an increment of 10 is assumed.
  56 The super-user can run utilities with priorities higher than normal by using
  57 a negative
  58 .Ar increment .
  59 The priority can be adjusted over a
  60 range of -20 (the highest) to 20 (the lowest).
  61 .Pp
  62 Available options:
  63 .Bl -tag -width indent
  64 .It Fl n Ar increment
  65 A positive or negative decimal integer used to modify the system scheduling
  66 priority of
  67 .Ar utility.
  68 .El
  69 .Sh DIAGNOSTICS
  70 The
  71 .Nm
  72 utility shall exit with one of the following values:
  73 .Bl -tag -width indent
  74 .It 1-125
  75 An error occurred in the
  76 .Nm
  77 utility.
  78 .It 126
  79 The
  80 .Ar utility
  81 was found but could not be invoked.
  82 .It 127
  83 The
  84 .Ar utility
  85 could not be found.
  86 .El
  87 .Pp
  88 Otherwise, the exit status of
  89 .Nm
  90 shall be that of
  91 .Ar utility .
  92 .Sh COMPATIBILITY
  93 The historic
  94 .Fl Ns Ar increment
  95 option has been deprecated but is still supported in this implementation.
  96 .Sh SEE ALSO
  97 .Xr csh 1 ,
  98 .Xr getpriority 2 ,
  99 .Xr setpriority 2 ,
 100 .Xr renice 8
 101 .Sh STANDARDS
 102 The
 103 .Nm
 104 utility conforms to
 105 .St -p1003.2-92 .
 106 .Sh HISTORY
 107 A
 108 .Nm
 109 utility appeared in
 110 .At v6 .
 111 .Sh BUGS
 112 .Nm
 113 is built into
 114 .Xr csh  1
 115 with a slightly different syntax than described here.  The form
 116 .Ql nice +10
 117 nices to positive nice, and
 118 .Ql nice \-10
 119 can be used
 120 by the super-user to give a process more of the processor.