NAME [Toc] [Back]
uname - display information about computer system; set node name
SYNOPSIS [Toc] [Back]
uname [-S nodename]
DESCRIPTION [Toc] [Back]
In the first form above, the uname command displays selected
information about the current computer system, derived from the
utsname structure (see uname(2)).
In the second form, uname sets the node name (system name) that is
used in the utsname structure.
Options [Toc] [Back]
uname recognizes the options listed below. If you enter several
options, the output is always in the order shown for the -a option.
none Equivalent to -s.
-a Display the options below in the following order,
separated by blanks.
-s -n -r -v -m -i -l
-i Display the machine identification number (or the
node name, if the machine identification number
cannot be determined). This option cannot display
the unique machine identification number. For
getting the unique machine identification number
refer to the getconf command or confstr call. See
getconf(1)) and confstr(3C).
-l Display the license level of the operating system.
128-, 256-, and unlimited-user licenses are shown
as unlimited-user license.
-m Display the machine hardware and model names. On
Itanium(R)-based systems, this option always
displays ia64. See WARNINGS.
-n Display the node name (system name) by which the
system is usually known in a UUCP network. See
-r Display the current release level of the operating
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-s Display the name of the operating system. On
standard HP-UX systems, this option always
-v Display the current version level of the operating
-S nodename Change the node name (system name) to nodename.
nodename is restricted to UTSLEN-1 characters (see
uname(2)). See WARNINGS. Only users with
appropriate privileges can use the -S option.
EXAMPLES [Toc] [Back]
When you execute the command uname -a, it produces output like the
HP-UX myhost A.09.01 C 9000/750 2015986034 32-user license
The displayed fields are interpreted as follows:
HP-UX The operating system name (option -s).
myhost The UUCP network system name by which
the system is known (-n).
B.11.00 The operating system release identifier
A The operating system version identifier
9000/889 The machine and model numbers (-m).
2015986034 The machine identification number (-i).
32-user license The operating system license level (-l).
WARNINGS [Toc] [Back]
It is recommended that the model command or the getconf command be
used to obtain the model name, since future model names may not be
compatible with uname. See model(1) and getconf(1).
Many types of networking services are supported on HP-UX, each of
which uses a separately assigned system name and naming convention.
To ensure predictable system behavior, it is essential that system
names (also called host names or node names) be assigned in such a
manner that they do not create conflicts when the various networking
facilities interact with each other.
The system does not rely on a single system name in a specific
location, partly because different services use dissimilar name
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formats as explained below. The hostname and uname commands assign
system names as follows:
|Node Name |Command |name Format |Used By |
|Internet name |hostname name |sys[.x.y.z...] |ARPA and NFS Services |
|UUCP name |uname -S name |sys |uucp, related programs |
where sys represents the assigned system name. It is strongly
recommended that sys be identical for all commands and locations and
that the optional .x.y.z... follow the specified notation for the
particular ARPA/NFS environment.
Internet names are also frequently called host names or domain names
(which are different from NFS domain names). Refer to hostname(5) for
more information about Internet naming conventions.
Whenever the system name is changed in any file or by the use of any
of the above commands, it should also be changed in all other
locations as well. Other files or commands in addition to those above
(such as /etc/uucp/Permissions if used to circumvent uname, for
example) may contain or alter system names. To ensure correct
operation, they should also use the same system name.
System names are normally assigned by the /sbin/init.d/hostname script
at start-up, and should not be altered elsewhere.
SEE ALSO [Toc] [Back]
getconf(1), hostname(1), model(1), setuname(1M), gethostname(2),
sethostname(2), uname(2), hostname(5).
STANDARDS CONFORMANCE [Toc] [Back]
uname: SVID2, SVID3, XPG2, XPG3, XPG4, POSIX.2
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