FreeBSD Books Post: 39012

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LEARN ABOUT FREEBSD

getosreldate

GETOSRELDATE(3) 					   BSD Library Functions Manual 					   GETOSRELDATE(3)

NAME

     getosreldate -- get the value of __FreeBSD_version

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <unistd.h>

     int
     getosreldate(void);

DESCRIPTION

     The getosreldate() function returns an integer showing the version of the currently running FreeBSD kernel.  Definitions of the values can be
     found in The Porter's Handbook which is usually installed at /usr/share/doc/en_US.ISO8859-1/books/porters-handbook/.

RETURN VALUES

     Upon successful completion, getosreldate() returns the value requested; otherwise the value -1 is returned and the global variable errno is
     set to indicate the error.

ENVIRONMENT

     OSVERSION	If the environment variable OSVERSION is set, it will override the getosreldate() return value.

EXAMPLES

     An example can be found in /usr/share/examples/FreeBSD_version.

ERRORS

     The getosreldate() function may fail and set errno for any of the errors specified for the library function sysctl(3).

SEE ALSO

     The Porter's Handbook, /usr/share/doc/en_US.ISO8859-1/books/porters-handbook/.

HISTORY

     The getosreldate() function appeared in FreeBSD 2.0.

BSD
								September 30, 2008							       BSD