1 .\" Copyright (c) 2002 The FreeBSD Project.
2 .\" All rights reserved.
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5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
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41 function returns an integer showing the version of the
45 Definitions of the values can be found in
46 .%B "The Porter's Handbook":
48 .Lk https://www.FreeBSD.org/doc/en/books/porters-handbook/
50 Upon successful completion,
52 returns the value requested;
53 otherwise the value \-1 is returned and the global variable
55 is set to indicate the error.
57 .Bl -tag -width ".Ev OSVERSION"
59 If the environment variable
61 is set, it will override the
66 An example can be found in
67 .Pa /usr/share/examples/FreeBSD_version .
71 function may fail and set
73 for any of the errors specified for the library function
77 .%B "The Porter's Handbook"