Subprocess puzzle and two questions
roy at panix.com
Fri Nov 16 02:07:38 CET 2012
In article <pan.2012.11.15.22.54.09.449000 at nowhere.com>,
Nobody <nobody at nowhere.com> wrote:
> That's because the high-level routines aren't tied to DNS.
This is true.
>> gethostbyname() and getaddrinfo() use the NSS (name-service switch)
> mechanism, which is configured via /etc/nsswitch.conf. Depending upon
> configuration, hostnames can be looked up via a plain text file
> (/etc/hosts), Berkeley DB files, DNS, NIS, NIS+, LDAP, WINS, etc.
Gethostbyname() long predates NSS. For that matter, I think it even
predates DNS (i.e. back to the days when /etc/hosts was the *only* way
to look up a hostname).
But, that's a nit.
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