How can I find the full hostname (FQDN) of the system I am running on?
Answer / chaitanya
Some systems set the hostname to the FQDN and others set it to just the unqualified host name. I know the current BIND FAQ recommends the FQDN, but most Solaris systems, for example, tend to use only the unqualified host name.
Regardless, the way around this is to first get the host's name (perhaps an FQDN, perhaps unaualified). Most systems support the Posix way to do this using uname(), but older BSD systems only provide gethostname(). Call gethostbyname() to find your IP address. Then take the IP address and call gethostbyaddr(). The h_name member of the hostent{} should then be your FQDN.
| Is This Answer Correct ? | 1 Yes | 0 No |
How is a socket created?
Why do not my sockets close?
Why do I keep getting EINTR from the socket calls?
Are unix sockets faster than tcp?
What is af_inet in socket?
What does af mean in sockets?
What exactly is a socket?
What are Sockets?
What is a socket set used for?
When should I use UDP instead of TCP?
Can a socket have multiple ports?
What is a socket connection?