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Annotation of 43BSDReno/usr.bin/nice/nice.1, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1980, 1990 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted provided
        !             5: .\" that: (1) source distributions retain this entire copyright notice and
        !             6: .\" comment, and (2) distributions including binaries display the following
        !             7: .\" acknowledgement:  ``This product includes software developed by the
        !             8: .\" University of California, Berkeley and its contributors'' in the
        !             9: .\" documentation or other materials provided with the distribution and in
        !            10: .\" all advertising materials mentioning features or use of this software.
        !            11: .\" Neither the name of the University nor the names of its contributors may
        !            12: .\" be used to endorse or promote products derived from this software without
        !            13: .\" specific prior written permission.
        !            14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            17: .\"
        !            18: .\"     @(#)nice.1     6.5 (Berkeley) 7/24/90
        !            19: .\"
        !            20: .Dd July 24, 1990
        !            21: .Dt NICE 1
        !            22: .Os BSD 4
        !            23: .Sh NAME
        !            24: .Nm nice
        !            25: .Nd execute a Bourne shell command at a low scheduling priority
        !            26: .Sh SYNOPSIS
        !            27: .Nm nice
        !            28: .Oo
        !            29: .Op Fl Ar number
        !            30: .Oo
        !            31: .Ar command
        !            32: .Op Ar arguments
        !            33: .Sh DESCRIPTION
        !            34: .Nm Nice
        !            35: runs
        !            36: .Ar command
        !            37: at a low priority.
        !            38: (Think of low and slow).
        !            39: If
        !            40: .Ar \-number
        !            41: is specified, and if it is greater than or equal
        !            42: to 10 (the default),
        !            43: .Nm nice
        !            44: will execute
        !            45: .Ar command
        !            46: at that priority.
        !            47: The upper bound, or lowest priority that
        !            48: .Nm nice
        !            49: will run a command is 20.
        !            50: The lower bounds or
        !            51: higher priorities (integers less than 10)
        !            52: can only be requested by the super-user.
        !            53: Negative numbers are expressed as
        !            54: .Ar \-\-number.
        !            55: .Pp
        !            56: The returned exit status is the exit value from the
        !            57: command executed by
        !            58: .Nm nice .
        !            59: .Sh SEE ALSO
        !            60: .Xr csh 1 ,
        !            61: .Xr renice 8
        !            62: .Sh HISTORY
        !            63: .Nm Nice
        !            64: appeared in Version 6 AT&T UNIX.
        !            65: .Sh BUGS
        !            66: .Nm Nice
        !            67: is particular to
        !            68: .Xr sh  1  .
        !            69: If you use
        !            70: .Xr csh  1  ,
        !            71: then commands executed with ``&'' are automatically immune to hangup
        !            72: signals while in the background.
        !            73: .Pp
        !            74: .Nm Nice
        !            75: is built into
        !            76: .Xr csh  1
        !            77: with a slightly different syntax than described here.  The form
        !            78: ``nice +10'' nices to positive nice, and ``nice \-10'' can be used
        !            79: by the super-user to give a process more of the processor.

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