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Full Discussion: Uname command
Top Forums UNIX for Dummies Questions & Answers Uname command Post 302375585 by TonyLawrence on Saturday 28th of November 2009 10:30:34 AM
Old 11-28-2009
There's no standard "uname". While I suspect that all uname's probably do implement -n somewhat identically, you can't be certain because there is variance on other options across different implementations.

Therefor, I can't imagine what in the man page confused you. I don't mean that sarcastically - I mean that because I don't know what man page you read, I don't know why it was confusing.

For example, on my OS X box here, it says

Quote:
-n print the nodename (the nodename may be a name that the system is
known by to a communications network).
On a nearby BSD box, man is more terse.

Quote:
-n Write the name of the system to standard output.
A Linux box says:

Quote:
-n, --nodename
print the network node hostname
An old SCO box tries to be more helpful:

Quote:
-n
Print the hostname (formerly also known as the ``node name''); that is, the first part (up to the first "." character) of the hostname parameter.
But it's not just the man pages. Implementation is different also. That BSD box prints out everyhing:

So does the Mac:

Quote:
$ uname -n
macbook.home
A SCO box:

Quote:
scosysv
And that's just -n, which is fairly dependable. Move into other flags and things can get very different.
Last edited by TonyLawrence; 11-28-2009 at 11:31 AM.. Reason: left out a word
 

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LEARN ABOUT REDHAT

uname

UNAME(1)								FSF								  UNAME(1)

NAME

       uname - print system information

SYNOPSIS

       uname [OPTION]...

DESCRIPTION

       Print certain system information.  With no OPTION, same as -s.

       -a, --all
	      print all information, in the following order:

       -s, --kernel-name
	      print the kernel name

       -n, --nodename
	      print the network node hostname

       -r, --kernel-release
	      print the kernel release

       -v, --kernel-version
	      print the kernel version

       -m, --machine
	      print the machine hardware name

       -p, --processor
	      print the processor type

       -i, --hardware-platform
	      print the hardware platform

       -o, --operating-system
	      print the operating system

       --help display this help and exit

       --version
	      output version information and exit

AUTHOR

       Written by David MacKenzie.

REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

       Copyright (C) 2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The full documentation for uname is maintained as a Texinfo manual.  If the info and uname programs are properly installed  at  your  site,
       the command

	      info uname

       should give you access to the complete manual.

uname (coreutils) 4.5.3 					   February 2003							  UNAME(1)
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