You can use the hostname command to display or set the Debian Linyx system's host name as follows:
$ hostname
Sample outputs:
server1To change hostname to server2, enter:
$ hostname server2
$ hostname
Sample outputs:
server2
How Do I Change Hostname Permanently?
Edit /etc/hostname, enter:# vi /etc/hostname
Delete the existing name and replace it with a new name:
server2Save and close the file. You may also need to edit the /etc/hosts file, enter:
# vi /etc/hosts
Find all references to server1 and replace with server2:
127.0.0.1 localhostSave and close the file. Please note that the host name is usually set once at system startup in /etc/init.d/hostname.sh (normally by reading the contents of a file which contains the host name, e.g. /etc/hostname). Just type the following command to apply new changes without rebooting the server:
127.0.1.1 server2
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
# /etc/init.d/hostname.sh start
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