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1 | .\" Copyright (c) 1993 The Regents of the University of California. |
2 | .\" All rights reserved. | |
3 | .\" | |
4 | .\" %sccs.include.redist.roff% | |
5 | .\" | |
6 | .\" @(#)uname.1 5.1 (Berkeley) %G% | |
7 | .\" | |
8 | .Dd "" | |
9 | .Dt UNAME 1 | |
10 | .Os | |
11 | .Sh NAME | |
12 | .Nm uname | |
13 | .Nd display information about the system | |
14 | .Sh SYNOPSIS | |
15 | .Nm uname | |
16 | .Op Fl amnrsv | |
17 | .Sh DESCRIPTION | |
18 | The | |
19 | .Nm uname | |
20 | command writes the name of the operating system to the standard output. | |
21 | When options are specified, strings representing one or more system | |
22 | characteristics are written to the standard output. | |
23 | .Pp | |
24 | The options are as follows: | |
25 | .Bl -tag -width Ds | |
26 | .It Fl a | |
27 | Behave as though the options | |
28 | .Fl m , | |
29 | .Fl n , | |
30 | .Fl r , | |
31 | .Fl s , | |
32 | and | |
33 | .Fl v | |
34 | were specified. | |
35 | .It Fl m | |
36 | Write the type of the current hardware platform to standard output. | |
37 | .It Fl n | |
38 | Write the name of the system to standard output. | |
39 | .It Fl r | |
40 | Write the current release level of the operating system | |
41 | to standard output. | |
42 | .It Fl s | |
43 | Write the type of the operating system to standard output. | |
44 | .It Fl v | |
45 | Write the version level of this release of the operating system | |
46 | to standard output. | |
47 | .El | |
48 | .Pp | |
49 | If the | |
50 | .Fl a | |
51 | flag is specified, or multiple flags are specified, all | |
52 | output is written on a single line, separated by spaces. | |
53 | .Pp | |
54 | The | |
55 | .Nm uname | |
56 | utility exits 0 on success, and >0 if an error occurs. | |
57 | .Sh SEE ALSO | |
58 | .Xr sysctl 1 , | |
59 | .Xr sysctl 2 | |
60 | .Sh HISTORY | |
61 | The | |
62 | .Nm uname | |
63 | command appeared in 4.4BSD. | |
64 | .Sh STANDARDS | |
65 | The | |
66 | .Nm ls | |
67 | function is expected to conform to the | |
68 | .St -p1003.2 | |
69 | specification. |