Ubuntu 20.04 LTS change hostname permanently

栏目: IT技术 · 发布时间: 6年前

内容简介：file. Open the Terminal application and type the following commands to set or change the hostname or computer name on Ubuntu.The procedure to change the computer name on Ubuntu 20.04 LTS:

I am a brand-new Ubuntu Linux 20.04 LTS VM user. By default, my server name to ‘localhost’ during cloud installation, but now I would like to change the computer name to ‘ubuntu-2004-nixcraft’. Can you tell me how do I remove the localhost and set it to ubuntu-2004-nixcraft on Ubuntu 20.04 Linux? How do I change the Ubuntu computer name from ‘localhost’ to ‘ubuntu-2004-nixcraft’? Can you tell me more about Ubuntu Linux change hostname command?

One can use the hostnamectl command to view or set the Ubuntu 20.04 LTS server’s host name. The host name or computer name is usually at system startup in /etc/hostname

file. Open the Terminal application and type the following commands to set or change the hostname or computer name on Ubuntu.

How to display the current Ubuntu hostname

Run the following command:

hostnamectl

Of course, you can use the echo command/printf command to print hostname too:

echo "$HOSTNAME"
printf "%s\n" $HOSTNAME
hostname

Ubuntu 20.04 LTS change hostname permanently

Finally, try thecat command on /etc/hostname

cat /etc/hostname

Ubuntu 20.04 LTS change hostname permanently

The procedure to change the computer name on Ubuntu 20.04 LTS:

Type the hostnamectl command :
sudo hostnamectl set-hostname newNameHere
Delete the old name and setup new name.
Next Edit the /etc/hosts file:
sudo nano /etc/hosts
Replace any occurrence of the existing computer name with your new hostname.
Reboot the system to changes take effect:
sudo reboot

How to change hostname on Ubuntu 20.04 without a system restart

Let us view current computer name setting, just type the following command:

hostnamectl

Next change hostname from localhost to ubuntu-2004-nixcraft, enter:

sudo hostnamectl set-hostname ubuntu-2004-nixcraft

Verify new changes:

hostnamectl
Ubuntu 20.04 LTS change hostname permanently

Find your public or private IP address by running theip command:

ip a

ip a s eth0

12: eth0@if13: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 00:16:3e:24:b3:08 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 10.105.28.43/24 brd 10.105.28.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::216:3eff:fe24:b308/64 scope link 
       valid_lft forever preferred_lft forever

Update /etc/hosts file with that IP address such as 10.105.28.43 using a text editor such as vim command/nano command:

$ sudo vi /etc/hosts

$ sudo nano /etc/hosts

Update/append:

10.105.28.43 ubuntu-2004-nixcraft

Make sure you replace all occurrence of the old computer name with your new one too. Save and close the file in vim .

Conclusion

You learned how to change hostname permanently when using Ubuntu 20.04 LTS server or desktop computer as per your project needs.

This entry is 17 of 17 in the Linux/Unix Set hostname Tutorial series. Keep reading the rest of the series:

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持码农网

查看所有标签

本站部分资源来源于网络，本站转载出于传递更多信息之目的，版权归原作者或者来源机构所有，如转载稿涉及版权问题，请联系我们。

码农书籍

深入浅出SQL（中文版）

贝里编 / O‘Reilly Taiwan公司 / 东南大学 / 2009-6 / 98.00元

你将从《深入浅出SQL(中文版)》学到什么？在如今的世界，数据就是力量，但是成功的真正秘诀却是管理你的数据的力量。《深入浅出SQL(中文版)》带你进入SQL语言的心脏地带，从使用INSERT和SELECT这些基本的查询语法到使用子查询(subquery)、连接(join)和事务(transaction)这样的核心技术来操作数据库。到读完《深入浅出SQL(中文版)》之时，你将不仅能够理解高效数据库设......一起来看看《深入浅出SQL（中文版）》这本书的介绍吧!

码农工具