Question: What Does the Host Command Do in Linux?

host command in Linux system is used for DNS (Domain Name System) lookup operations. In simple words, this command is used to find the IP address of a particular domain name or if you want to find out the domain name of a particular IP address the host command becomes handy.

How does hostname command work?

The hostname command is used to show or set a computer’s host name and domain name. A host name is a name that is assigned to a host (i.e., a computer connected to the network) that uniquely identifies it on a network and thus allows it to be addressed without using its full IP address. …

How define hostname in Linux?

The procedure to change the computer name on Ubuntu Linux:

1. Type the following command to edit /etc/hostname using nano or vi text editor: sudo nano /etc/hostname. Delete the old name and setup new name.
2. Next Edit the /etc/hosts file: sudo nano /etc/hosts. …
3. Reboot the system to changes take effect: sudo reboot.

19 февр. 2021 г.