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--- old/usr/src/man/man1/sleep.1
+++ new/usr/src/man/man1/sleep.1
1 1 '\" te
2 2 .\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved Portions
3 3 .\" Copyright 1989 AT&T
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4 4 .\" Portions Copyright (c) 1982-2007 AT&T Knowledge Ventures
5 5 .\" Portions Copyright (c) 1992, X/Open Company Limited All Rights Reserved
6 6 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at http://www.opengroup.org/bookstore/.
7 7 .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text
8 8 .\" are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical
9 9 .\" and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
10 10 .\" This notice shall appear on any product containing this material.
11 11 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.
12 12 .\" See the License for the specific language governing permissions and limitations under the License. When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with
13 13 .\" the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
14 -.TH SLEEP 1 "Nov 20, 2007"
14 +.TH SLEEP 1 "Sep 10, 2013"
15 15 .SH NAME
16 16 sleep \- suspend execution for an interval
17 17 .SH SYNOPSIS
18 18 .SS "/usr/bin/sleep"
19 19 .LP
20 20 .nf
21 21 \fB/usr/bin/sleep\fR \fIseconds\fR
22 22 .fi
23 23
24 24 .SS "ksh93"
25 25 .LP
26 26 .nf
27 27 \fBsleep\fR \fIseconds\fR
28 28 .fi
29 29
30 30 .SH DESCRIPTION
31 31 .sp
32 32 .LP
33 33 \fBsleep\fR suspends execution for at least the time in seconds specified by
34 34 \fIseconds\fR or until a \fBSIGALRM\fR signal is received. The \fIseconds\fR
35 35 operand can be specified as a floating point number but the actual granularity
36 36 normally depends on the underlying system.
37 37 .SH OPERANDS
38 38 .SS "/usr/bin/sleep"
39 39 .sp
40 40 .LP
41 41 The following operands are supported for \fB/usr/bin/sleep\fR and \fBksh93\fR's
42 42 \fBsleep\fR built-in command:
43 43 .sp
44 44 .ne 2
45 45 .na
46 46 \fB\fIseconds\fR\fR
47 47 .ad
48 48 .RS 11n
49 49 A non-negative floating-point number specifying the number of seconds for which
50 50 to suspend execution. The floating-point number may be specified in all formats
51 51 required by C99/XPG6, including constants such as "Inf" or "infinite".
52 52 .RE
53 53
54 54 .SS "ksh93"
55 55 .sp
56 56 .LP
57 57 The following operands are supported:
58 58 .sp
59 59 .ne 2
60 60 .na
61 61 \fB\fItime\fR\fR
62 62 .ad
63 63 .RS 8n
64 64 Specify \fItime\fR in seconds as a floating point number. The actual
65 65 granularity depends on the underlying system, normally around 1 millisecond.
66 66 .RE
67 67
68 68 .SH EXAMPLES
69 69 .LP
70 70 \fBExample 1 \fRSuspending Command Execution
71 71 .sp
72 72 .LP
73 73 The following example executes a command after a certain amount of time:
74 74
75 75 .sp
76 76 .in +2
77 77 .nf
78 78 example% \fB(sleep 105; \fIcommand\fR)&\fR
79 79 .fi
80 80 .in -2
81 81 .sp
82 82
83 83 .LP
84 84 \fBExample 2 \fRExecuting a Command Every So Often
85 85 .sp
86 86 .LP
87 87 The following example executes a command every so often:
88 88
89 89 .sp
90 90 .in +2
91 91 .nf
92 92 example% \fBwhile true
93 93 do
94 94 \fIcommand\fR
95 95 sleep 37
96 96 done\fR
97 97 .fi
98 98 .in -2
99 99 .sp
100 100
101 101 .LP
102 102 \fBExample 3 \fRSuspend command execution forever (or until a \fBSIGALRM\fR
103 103 signal is received)
104 104 .sp
105 105 .in +2
106 106 .nf
107 107 example% sleep Inf
108 108 .fi
109 109 .in -2
110 110 .sp
111 111
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112 112 .LP
113 113 \fBExample 4 \fRSuspending command execution for 0.5 seconds
114 114 .sp
115 115 .LP
116 116 Suspending command execution for 0.5 seconds using an alternative
117 117 floating-point representation for the value "0.5"
118 118
119 119 .sp
120 120 .in +2
121 121 .nf
122 -example% printf "%a\n" 0.5
122 +example% printf "%a\en" 0.5
123 123 0x1.0000000000000000000000000000p-01
124 124 .fi
125 125 .in -2
126 126 .sp
127 127
128 128 .sp
129 129 .in +2
130 130 .nf
131 131 example% sleep 0x1.0000000000000000000000000000p-01
132 132 .fi
133 133 .in -2
134 134 .sp
135 135
136 136 .SH ENVIRONMENT VARIABLES
137 137 .sp
138 138 .LP
139 139 See \fBenviron\fR(5) for descriptions of the following environment variables
140 140 that affect the execution of \fBsleep\fR: \fBLANG\fR, \fBLC_ALL\fR,
141 141 \fBLC_CTYPE\fR, \fBLC_MESSAGES\fR, and \fBNLSPATH\fR.
142 142 .SH EXIT STATUS
143 143 .sp
144 144 .LP
145 145 The following exit values are returned:
146 146 .sp
147 147 .ne 2
148 148 .na
149 149 \fB\fB0\fR\fR
150 150 .ad
151 151 .RS 6n
152 152 The execution was successfully suspended for at least \fItime\fR seconds, or a
153 153 \fBSIGALRM\fR signal was received (see NOTES).
154 154 .RE
155 155
156 156 .sp
157 157 .ne 2
158 158 .na
159 159 \fB\fB>0\fR\fR
160 160 .ad
161 161 .RS 6n
162 162 An error has occurred.
163 163 .RE
164 164
165 165 .SH ATTRIBUTES
166 166 .sp
167 167 .LP
168 168 See \fBattributes\fR(5) for descriptions of the following attributes:
169 169 .SS "/usr/bin/sleep"
170 170 .sp
171 171
172 172 .sp
173 173 .TS
174 174 box;
175 175 c | c
176 176 l | l .
177 177 ATTRIBUTE TYPE ATTRIBUTE VALUE
178 178 _
179 179 Interface Stability Committed
180 180 _
181 181 Standard See \fBstandards\fR(5).
182 182 .TE
183 183
184 184 .SS "ksh93"
185 185 .sp
186 186
187 187 .sp
188 188 .TS
189 189 box;
190 190 c | c
191 191 l | l .
192 192 ATTRIBUTE TYPE ATTRIBUTE VALUE
193 193 _
194 194 Interface Stability Uncommitted
195 195 .TE
196 196
197 197 .SH SEE ALSO
198 198 .sp
199 199 .LP
200 200 \fBksh93\fR(1), \fBwait\fR(1), \fBalarm\fR(2), \fBsleep\fR(3C),
201 201 \fBwait\fR(3UCB), \fBattributes\fR(5), \fBenviron\fR(5), \fBstandards\fR(5)
202 202 .SH NOTES
203 203 .sp
204 204 .LP
205 205 If the \fBsleep\fR utility receives a \fBSIGALRM\fR signal, one of the
206 206 following actions is taken:
207 207 .RS +4
208 208 .TP
209 209 .ie t \(bu
210 210 .el o
211 211 Terminate normally with a zero exit status.
212 212 .RE
213 213 .RS +4
214 214 .TP
215 215 .ie t \(bu
216 216 .el o
217 217 Effectively ignore the signal.
218 218 .RE
219 219 .sp
220 220 .LP
221 221 The \fBsleep\fR utility takes the standard action for all other signals.
222 222 .sp
223 223 .LP
224 224 The behavior for input values such as "NaN" (not-a-number) or negative values
225 225 is undefined.
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