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OpenSolaris 2009.06 - man page for setuname (opensolaris section 1m)

setuname(1M)						  System Administration Commands					      setuname(1M)

setuname - change machine information
setuname [-t] [-n node] [-s name]
The setuname utility changes the parameter value for the system name and node name. Each parameter can be changed using setuname and the appropriate option. Either or both the -s and -n options must be given when invoking setuname. The system architecture may place requirements on the size of the system and network node name. The command will issue a fatal warning mes- sage and an error message if the name entered is incompatible with the system requirements.
The following options are supported: -n node Changes the node name. node specifies the new network node name and can consist of alphanumeric characters and the special char- acters dash, underbar, and dollar sign. -s name Changes the system name. name specifies new system name and can consist of alphanumeric characters and the special characters dash, underbar, and dollar sign. -t Temporary change. No attempt will be made to create a permanent change.
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+
setuname attempts to change the parameter values in two places: the running kernel and, as necessary per implementation, to cross system reboots. A temporary change changes only the running kernel. SunOS 5.11 9 Jul 2003 setuname(1M)