Host name is the identifier of a system in the network. Host name can be get with different ways in Linux. Host name is generally put in the /etc/hostname file.
Get Host name By Echoing Host name File
Host name information is stored in a file
/etc/hostname . So we can simple print the host name to the terminal with
echo command like below.
$ cat /etc/hostname
Get Host name With hostname Command
We can get host name with
hostname command. This will only list host name and will not print domain related information.
Get Fully Qualified Host name
We can get fully qualified host name which provides full name with domain information.
$ hostname -f
Host name file /etc/hostname will only provide host name with fully qualified domain name. There will any no other data in this file.
Change Host name
As the hostname is stored in the
/etc/hostname file we can change the hostname by editing this file. We will set the hostname as
ubu1 with the following
echo command. Keep in mind that in order to change
/etc/hostname file we require root privileges which can be get with the
$ sudo echo "ubu1" > /etc/hostname
Get Domain Name
Domain name information is about the systems network configuration.
$ dnsdomainname cen1.test