20 Linux Set Domain Name Debian New

Now a hostname d should give somewhere co uk as an answer.
Linux set domain name debian. Hostname uses the sethostname 2 function while all of the three domainname ypdomainname and nisdomainname use setdomainname 2. Edit etc hostname for permanent change. In this tutorial you will learn how to change your hostname on debian linux.
The etc resolv conf is the main configuration file for the dns name resolver library. You can add instead a domain alias to etc hosts. Dear list i have become confused about the domain name handling in debian.
You can use the hostname command to display or set the debian linux system s host name. I would like to change hostname and domain name for my linux server. The resolver is a set of functions in the c library that provide access to the internet domain name system dns the functions are configured to check entries in the etc hosts file or several dns name servers or to use the host s database of network information service nis.
First set the new hostname using the hostnamectl set hostname command followed by the desired hostname and then update the etc hosts file with the new hostname. The entry that involves host name resolution is hosts by default it contains files dns which means that the system consults the etc hosts file first then dns servers. The mechanism for name resolution in linux is modular and can use various sources of information declared in the etc nsswitch conf file.
Note that this is effective only until the next reboot. A similar question has been asked on serverfault. For setting the domain name in debian you can edit etc hostname for a host hulefu in domain somewhere co uk you simply set etc hostname to hulefu somewhere co uk this should work for most other linux distributions too.
Nis nis or ldap servers are other possible sources. Set name when called with one argument or with the file option the commands set the host name or the nis yp domain name. H ow do i change the hostname of a debian linux system permanently using the command line tools.