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/etc/hosts #Configuration of lokal DNS-resolving /etc/HOSTNAME #Configuration of System Hostname
Following files are the local DNS-config files:
/etc/resolv.conf #Configuration of DNS-Servers /etc/nsswitch.conf #Configuration how a service or a command is getting DNS-Adress (via /etc/hosts or /etc/resolv.conf) /etc/hosts #Configuration hosts file (local DNS resolution)
DNS Service on Linux:
nscd
Example resolv.conf
#DNS-SUFFIX for DNS resolving domain site.example.com site.example.de #List of nameservers to add nameserver 1.2.3.4 nameserver 2.3.4.5