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Annotation of 43BSDTahoe/man/man1/nice.1, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1980 Regents of the University of California.
                      2: .\" All rights reserved.  The Berkeley software License Agreement
                      3: .\" specifies the terms and conditions for redistribution.
                      4: .\"
                      5: .\"    @(#)nice.1      6.2 (Berkeley) 5/8/86
                      6: .\"
                      7: .TH NICE 1 "May 8, 1986"
                      8: .UC 4
                      9: .SH NAME
                     10: nice, nohup \- run a command at low priority (\fIsh\fR only)
                     11: .SH SYNOPSIS
                     12: .B nice
                     13: [
                     14: .BI \- number
                     15: ]
                     16: command [ arguments ]
                     17: .PP
                     18: .B nohup
                     19: command [ arguments ]
                     20: .SH DESCRIPTION
                     21: .I Nice
                     22: executes
                     23: .I command
                     24: with low scheduling priority.
                     25: If the
                     26: .I number
                     27: argument is present, the priority is incremented (higher
                     28: numbers mean lower priorities) by that amount up to a limit of 20.
                     29: The default
                     30: .I number
                     31: is 10.
                     32: .PP
                     33: The super-user may run commands with
                     34: priority higher than normal
                     35: by using a negative priority,
                     36: e.g. `\-\-10'.
                     37: .PP
                     38: .I Nohup
                     39: executes
                     40: .I command
                     41: immune to hangup and terminate signals from the controlling terminal.
                     42: The priority is incremented by 5.
                     43: .I Nohup
                     44: should be invoked from the shell with `&' in order to 
                     45: prevent it from responding to interrupts by or
                     46: stealing the input from
                     47: the next person who logs in on the same terminal.
                     48: .SH FILES
                     49: nohup.out      standard output and standard error file under
                     50: .I nohup
                     51: .SH "SEE ALSO"
                     52: csh(1), setpriority(2), renice(8)
                     53: .SH DIAGNOSTICS
                     54: .I Nice
                     55: returns the exit status of the subject command.
                     56: .SH BUGS
                     57: .I Nice
                     58: and
                     59: .I nohup
                     60: are particular to
                     61: .IR sh (1).
                     62: If you use
                     63: .IR csh (1),
                     64: then commands executed with ``&'' are automatically immune to hangup
                     65: signals while in the background.
                     66: There is a builtin command
                     67: .I nohup
                     68: which provides immunity from terminate, but it does not
                     69: redirect output to
                     70: .I nohup.out.
                     71: .PP
                     72: .I Nice
                     73: is built into
                     74: .IR csh (1)
                     75: with a slightly different syntax than described here.  The form
                     76: ``nice +10'' nices to positive nice, and ``nice \-10'' can be used
                     77: by the super-user to give a process more of the processor.

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