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Full Discussion: hostname on Solaris
Operating Systems Solaris hostname on Solaris Post 302334488 by seg on Wednesday 15th of July 2009 05:07:19 PM
Old 07-15-2009
Quote:
Originally Posted by lmishkind
I am wondering how does the hostname command decides what is the actual hostname. Where does the command take the information from?
On Solaris the `hostname` command is a shell script that runs `uname -n` (and uses `uname -S ${1}` to set the hostname). I ran a `truss uname -n` to see if I could spot the location in memory or disk easily but I was not able to figure that out.

During boot the sysid tools check /etc/nodename and set the hostname of the system to the contents of that file.
 

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UNAME(1)						    BSD General Commands Manual 						  UNAME(1)

NAME
uname -- Print operating system name SYNOPSIS
uname [-amnprsv] DESCRIPTION
The uname utility writes symbols representing one or more system characteristics to the standard output. The following options are available: -a Behave as though all of the options -mnrsv were specified. -m print the machine hardware name. -n print the nodename (the nodename may be a name that the system is known by to a communications network). -p print the machine processor architecture name. -r print the operating system release. -s print the operating system name. -v print the operating system version. If no options are specified, uname prints the operating system name as if the -s option had been specified. SEE ALSO
hostname(1), machine(1), sw_vers(1), uname(3) STANDARDS
The uname utility conforms to IEEE Std 1003.2-1992 (``POSIX.2''). The -p option is an extension to the standard. BSD
November 9, 1998 BSD
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