The cu gets it hostname from the command hostname . Do a man hostname to get the details :
The hostname command displays the name of the current host, as given
in the gethostname() system call (see gethostname(2)). Users who have
appropriate privileges can set the hostname by giving the argument
name_of_host; this is usually done in the startup script
/sbin/init.d/hostname. The name_of_host argument is restricted to
MAXHOSTNAMELEN characters as defined in .
The system might be known by other names if networking products are
supported. See the node manager documentation supplied with your
system.
WARNINGS
If the name_of_host argument is specified, the resulting host name
change lasts only until the system is rebooted. To change the host
name permanently, run the special initialization script
/sbin/set_parms (see Using Your HP Workstation).
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
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.
Hewlett-Packard Company - 1 - HP-UX Release 11.00: October 1997
hostname(1) hostname(1)
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.
AUTHOR
hostname was developed by the University of California, Berkeley.
SEE ALSO
uname(1), gethostname(2), sethostname(2), uname(2), hostname(5).
Using Your HP Workstation
Hewlett-Packard Company - 2 - HP-UX Release 11.00: October 1997
Manoj Srivastava
