10-20-2015
Can I change my hostname without messing things up?
I noticed my hostname is <my-full-name>s-macbook.local. I'm not sure exactly what information leaves the local network, and whether the hostname is included, but if it is, this would mean people on the Internet can look at my hostname and see who I am. Before anyone says that's not possible, there was a time when someone addressed me by my full name on YouTube, and that was when I was on an account that I had created through a GMail account that didn't have my real name on it, so they must have gotten my real name by looking at my hostname, or at least something similar to that.
So I would like to change my hostname, but I'm not sure if I can do this without messing things up on my local host. I'm afraid if I change things like my IP address or my hostname, I won't be able to use the Internet anymore. Can anyone explain to me how this works? I guess I basically have three questions: 1) Will changing my hostname affect my ability to log onto a network. 2) If so, why? 3) If so, what other information do I need to reconfigure so I can log onto a network again?
Additional information that may be relevant: I have no home network. I always use public WiFi networks.
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LEARN ABOUT SUNOS
check-hostname
check-hostname(1M) System Administration Commands check-hostname(1M)
NAME
check-hostname - check if sendmail can determine the system's fully-qualified host name
SYNOPSIS
/usr/sbin/check-hostname
DESCRIPTION
The check-hostname script is a migration aid for sendmail(1M). This script tries to determine the local host's fully-qualified host name
(FQHN) in a manner similar to sendmail(1M). If check-hostname is able to determine the FQHN of the local host, it reports success. Other-
wise, check-hostname reports how to reconfigure the system so that the FQHN can be properly determined.
FILES
/etc/hosts Host name database
/etc/nsswitch.conf Name service switch configuration file
/etc/resolv.conf Configuration file for name server routines
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWsndmu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO
sendmail(1M), hosts(4), attributes(5)
SunOS 5.10 10 Nov 2003 check-hostname(1M)