/usr.bin/uname/uname.1

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  1. .\" Copyright (c) 1993
    2. 

  2. .\"	The Regents of the University of California.  All rights reserved.
    3. 

  3. .\"
    4. 

  4. .\" Redistribution and use in source and binary forms, with or without
    5. 

  5. .\" modification, are permitted provided that the following conditions
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  6. .\" are met:
    7. 

  7. .\" 1. Redistributions of source code must retain the above copyright
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  8. .\"    notice, this list of conditions and the following disclaimer.
    9. 

  9. .\" 2. Redistributions in binary form must reproduce the above copyright
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  10. .\"    notice, this list of conditions and the following disclaimer in the
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  11. .\"    documentation and/or other materials provided with the distribution.
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  12. .\" 4. Neither the name of the University nor the names of its contributors
    13. 

  13. .\"    may be used to endorse or promote products derived from this software
    14. 

  14. .\"    without specific prior written permission.
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  15. .\"
    16. 

  16. .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
    17. 

  17. .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    18. 

  18. .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    19. 

  19. .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
    20. 

  20. .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    21. 

  21. .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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  22. .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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  23. .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    24. 

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    25. 

  25. .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    26. 

  26. .\" SUCH DAMAGE.
    27. 

  27. .\"
    28. 

  28. .\"	@(#)uname.1	8.3 (Berkeley) 4/8/94
    29. 

  29. .\" $FreeBSD$
    30. 

  30. .\"
    31. 

  31. .Dd January 26, 2010
    32. 

  32. .Dt UNAME 1
    33. 

  33. .Os
    34. 

  34. .Sh NAME
    35. 

  35. .Nm uname
    36. 

  36. .Nd display information about the system
    37. 

  37. .Sh SYNOPSIS
    38. 

  38. .Nm
    39. 

  39. .Op Fl aimnoprsv
    40. 

  40. .Sh DESCRIPTION
    41. 

  41. The
    42. 

  42. .Nm
    43. 

  43. command writes the name of the operating system implementation to
    44. 

  44. standard output.
    45. 

  45. When options are specified, strings representing one or more system
    46. 

  46. characteristics are written to standard output.
    47. 

  47. .Pp
    48. 

  48. The options are as follows:
    49. 

  49. .Bl -tag -width indent
    50. 

  50. .It Fl a
    51. 

  51. Behave as though the options
    52. 

  52. .Fl m , n , r , s ,
    53. 

  53. and
    54. 

  54. .Fl v
    55. 

  55. were specified.
    56. 

  56. .It Fl i
    57. 

  57. Write the kernel ident to standard output.
    58. 

  58. .It Fl m
    59. 

  59. Write the type of the current hardware platform to standard output.
    60. 

  60. .It Fl n
    61. 

  61. Write the name of the system to standard output.
    62. 

  62. .It Fl o
    63. 

  63. This is a synonym for the
    64. 

  64. .Fl s
    65. 

  65. option, for compatibility with other systems.
    66. 

  66. .It Fl p
    67. 

  67. Write the type of the machine processor architecture to standard output.
    68. 

  68. .It Fl r
    69. 

  69. Write the current release level of the operating system
    70. 

  70. to standard output.
    71. 

  71. .It Fl s
    72. 

  72. Write the name of the operating system implementation to standard output.
    73. 

  73. .It Fl v
    74. 

  74. Write the version level of this release of the operating system
    75. 

  75. to standard output.
    76. 

  76. .El
    77. 

  77. .Pp
    78. 

  78. If the
    79. 

  79. .Fl a
    80. 

  80. flag is specified, or multiple flags are specified, all
    81. 

  81. output is written on a single line, separated by spaces.
    82. 

  82. .Sh ENVIRONMENT
    83. 

  83. An environment variable composed of the string
    84. 

  84. .Ev UNAME_
    85. 

  85. followed by any flag to the
    86. 

  86. .Nm
    87. 

  87. utility (except for
    88. 

  88. .Fl a )
    89. 

  89. will allow the corresponding data to be set to the contents
    90. 

  90. of the environment variable.
    91. 

  91. .Sh EXIT STATUS
    92. 

  92. .Ex -std
    93. 

  93. .Sh SEE ALSO
    94. 

  94. .Xr sysctl 3 ,
    95. 

  95. .Xr uname 3 ,
    96. 

  96. .Xr sysctl 8
    97. 

  97. .Sh STANDARDS
    98. 

  98. The
    99. 

  99. .Nm
    100. 

  100. command is expected to conform to the
    101. 

  101. .St -p1003.2
    102. 

  102. specification.
    103. 

  103. .Sh HISTORY
    104. 

  104. The
    105. 

  105. .Nm
    106. 

  106. command appeared in PWB UNIX.
    107.