Joinsubscribers and get a daily digest of news, geek trivia, and our feature articles. The process here will also work on Linux Mint and other Debian-based Linux distributions. Other Linux distributions — for example, Fedora and other Red Hat-based distributions — use different methods for specifying a hostname. You can change the hostname to anything that you want. The hostname is supposed to uniquely identify a computer on a network. Host names can only contain letters a through zdigits 0 through 9and the hyphen character —and the period character.
A hostname must begin and end with a letter or number — not a hyphen or period. Open a terminal window to get started.
Consult our guide to using nano or introduction to using vi for help using these text editors. To change it, just delete the existing hostname from the file. Replace it with your new desired hostname and then save the text file.
Once again, you could use any other text editor you want — nano, vi, or another graphical text editor of your choice. Once again, replace the old hostname with your new hostname.
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The change above will take effect when you reboot, but you can use the hostname command in a terminal to change your hostname immediately. Run the hostname command in a terminal window to specify a new hostname. If you chose an invalid hostname, this command will tell you and you can try again.
Run the command like so:. The terminal will notice when you re-open it — or if you just open a new one. The Best Tech Newsletter Anywhere. Joinsubscribers and get a daily digest of news, comics, trivia, reviews, and more.
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Skip to content. How-To Geek is where you turn when you want experts to explain technology. Since we launched inour articles have been read more than 1 billion times. Want to know more?GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. I'm pretty sure I need to change it because when I run sudo apt-get update or sudo apt-get upgradeI get this message:. While searching the net for answers to this question, I read that a nix hostname can't contain an underscore.
I don't know if that's true, but Im guessing there are some restrictions like that. Could you try something for me? Wow, that worked to solve the sudo apt-get update and sudo apt-get upgrade "unable to resove host" messages! I'll try to solve the nn problem some other way.How WSL accesses Linux files from Windows
Tips are welcome about this nn issue. GitHub Selfies. Per you need change change the hostname in Windows. I tried changing it in Ubuntu and it does not persist. Calling this fixed on that basis. Changing the hosts in WSL won't change it in Windows. That's by-design for the time being; you are spiritually in a container and might have multiple WSL instances each with their own hostname. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
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Labels fixedin Copy link Quote reply. I'd appreciate any hostname tips. This comment has been minimized. Sign in to view. Navigate to an empty row with your arrow keys and hit the i key to enter insert mode. Type the localhost address followed by a space and your hostname exactly as it appears in the hostname file. Hit the Esc key to switch back to normal mode. Type :wq followed by enterto write your changes and quit VIM. Close bash and reopen it just for good measure.
It only takes a minute to sign up. I'm running Ubuntu I have another server not cloud instance but physical server. It means that "the system" I'm using that term in a broad, general, ambiguous sense doesn't know that the name ubuntugraphite corresponds to your host and its IP address. The fact that is is your host's name isn't enough to make this happen.
There is some debate over the question of what IP address you should associate with your host name. Everyone agrees that it should be an address that "works" for your host; i.
D should succeed. Some people recommend using a loopback address. Loopback addresses are always of the form D ; common values are Other people recommend using a LAN address, which might look like D but it can be almost anything — but you should not put a dynamically assigned address into your hosts file and, if you're using DHCP with DNS, then the dynamically assigned address es should be entered into your DNS records automatically.
For details on this, you need to refer to your provider's documentation. More information on the myhostname flag is here. Also check the IP address.
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Asked 3 years, 11 months ago. Active 12 months ago. Viewed 78k times. I tried to ping to ubuntugraphite but it said: unknown host ubuntugraphite. Does that mean my host doesn't even exist? Rui F Ribeiro The One The One 3, 11 11 gold badges 23 23 silver badges 34 34 bronze badges. Active Oldest Votes. Thanks your your answer.
Super User is a question and answer site for computer enthusiasts and power users. It only takes a minute to sign up. Why would this happen in each fresh install and how to solve it? I don't know why it happens please improve the answer with an explanationhere is a working solution for this problem:.
Delete anything besides your machine name. Sign up to join this community. The best answers are voted up and rise to the top.
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Asked 3 years ago. Active 1 year, 7 months ago. Viewed 5k times. Active Oldest Votes. I don't know why it happens please improve the answer with an explanationhere is a working solution for this problem: 1.
Save and exit. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Socializing with co-workers while social distancing. Podcast Programming tutorials can be a real drag. Featured on Meta. Community and Moderator guidelines for escalating issues via new response…. Feedback on Q2 Community Roadmap.If you need to know the name of your Ubuntu computer, this post shows you several ways to find it.
We will will also show you how to easily change your host name. In Ubuntu The device name shows up in the GUI and the host name shows up in Terminal. Your host name can be found in several places. The first place we will look is the Terminal window.
Find and Change Your Hostname in Ubuntu
To open the Terminal window, select Accessories Terminal from the Applications menu. In newer versions of Ubuntu, like Ubuntu It may seem redundant, as the host name already displays in the title bar and the prompt, but you can also enter the following command to view the host name.
Previously, it was the only way to change the host name. Luckily, there is a different way that is easier. The easiest way to change your Ubuntu hostname is to simply go to Settings.
If the gear icon is in the top-right corner, click on About this Computer. If you had to open Settings, scroll all the way down to where it says Details and click on that.
When you click on Details, it should bring you to the About screen automatically. You will see an editable text box called Device name. Just type the new host name you would like and press Enter. Another way to change the host name is to open a Terminal window and type in the following command:. If you need to change it permanently, you can edit the hostname file I talked about earlier. To do that, open terminal and type in the following command:.
The file should have nothing but the hostname in the first line. In vi, you can go into Insert mode by pressing the letter i.
To delete characters, you press the x key. You can also press the letter a to go to Append mode. Note that to delete letters using x, you have to press ESC first to get out of Insert or Append mode first. Once you change the name there, you also need to change it in one other location. Use the following command:.
Once you change it in both of these locations, you can restart and the new name will remain. So there seems to be a difference between the device name and the host name. Founder of Help Desk Geek and managing editor. He began blogging in and quit his job in to blog full-time. He has over 15 years of industry experience in IT and holds several technical certifications.
See also: How do I change the hostname without a restart? As long as you have no application settings depending on the 'old' hostname, you should be ok. From a terminal execute the following:.
Mysql and postfix are installed by default in ubuntu. A broken postfix won't affect most ubuntu users, since it's a background email server that isn't used by much. The default config for mysql doesn't use hostname, so it will work fine as-is. That one won't harm anything though. Other services that you may have installed that would need fixing are apache, bind9, etc.
In each case, find and edit the hostname in their config and restart the service. The host name uniquely identifies your computer on the local network and possibly on the Internet as well so it's not a good idea to change it unless you know what you are doing.
See the bash man page and specifically the section on prompting for more information. If you don't want to play with a text editor, Ubuntu Tweak grab the deb from their website has that as one of the little things you can play with along with lots of other little tweaks that you might want to make but don't really want to play around with the terminal and the files themselves.
However, this does not edit your hosts file, which you must do so as to make sure that your computer recognizes itself. Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top.
Fixing Windows Subsystem for Linux (WSL) name resolution errors with VPN
Home Questions Tags Users Unanswered. How do I change the computer name?I know this might not be the right place to ask this question. But I didn't find a more suitable forum to post it can't find a forum category named 'WSL' or likes.
Since this forum is mainly covering questions about System Center Virtual Machine ManagerI would recommend to submit a new question on the following site for getting support.
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Sign in to vote. Sunday, January 12, PM. What I really want is have a 'Server' running in WSL2, and a 'Client' running on the host Windows, and they uses a nslookup mechanism to find each other. Hello, Since this forum is mainly covering questions about System Center Virtual Machine ManagerI would recommend to submit a new question on the following site for getting support.
Monday, January 13, AM.
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