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@(#)uname.3 8.1 (Berkeley) 1/4/94
$FreeBSD$
.Dd December 2, 2005 .Dt UNAME 3 .Os .Sh NAME .Nm uname .Nd get system identification .Sh LIBRARY .Lb libc .Sh SYNOPSIS n sys/utsname.h .Ft int .Fn uname "struct utsname *name" .Sh DESCRIPTION The .Fn uname function stores .Dv NUL Ns -terminated strings of information identifying the current system into the structure referenced by .Fa name .
p The .Vt utsname structure is defined in the n sys/utsname.h header file, and contains the following members: l -tag -width nodenameXXXX -offset indent t sysname Name of the operating system implementation. t nodename Network name of this machine. t release Release level of the operating system. t version Version level of the operating system. t machine Machine hardware platform. .El .Sh RETURN VALUES .Rv -std uname .Sh ENVIRONMENT l -tag -width ".Ev UNAME_s" t Ev UNAME_s If the environment variable .Ev UNAME_s is set, it will override the .Va sysname member. t Ev UNAME_r If the environment variable .Ev UNAME_r is set, it will override the .Va release member. t Ev UNAME_v If the environment variable .Ev UNAME_v is set, it will override the .Va version member. t Ev UNAME_m If the environment variable .Ev UNAME_m is set, it will override the .Va machine member. .El .Sh ERRORS The .Fn uname function may fail and set .Va errno for any of the errors specified for the library functions .Xr sysctl 3 . .Sh SEE ALSO .Xr uname 1 , .Xr sysctl 3 .Sh STANDARDS The .Fn uname function conforms to .St -p1003.1-88 . .Sh HISTORY The .Fn uname function first appeared in x 4.4 .