Distros que usam systemd
use hostnamectl
para definir seu nome de host:
$ sudo hostnamectl set-hostname exchange.mydomain.com
Você terá que fazer logoff e voltar novamente para ver a alteração no prompt do shell, mas o comando hostname
mostrará a alteração assim que você executar o comando.
Uso
$ sudo hostnamectl --help
hostnamectl [OPTIONS...] COMMAND ...
Query or change system hostname.
-h --help Show this help
--version Show package version
--no-ask-password Do not prompt for password
-H --host=[USER@]HOST Operate on remote host
-M --machine=CONTAINER Operate on local container
--transient Only set transient hostname
--static Only set static hostname
--pretty Only set pretty hostname
Commands:
status Show current hostname settings
set-hostname NAME Set system hostname
set-icon-name NAME Set icon name for host
set-chassis NAME Set chassis type for host
set-deployment NAME Set deployment environment for host
set-location NAME Set location for host