A hostname is the label given to a device connected to a computer network.

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2
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2answers
22 views

Changing hostname reboot reverts back to original

So, What I'm trying to do is simply change the hostname permanently. I can update the hostname but when a reboot is issued the original hostname is used! I'm aware there is a file hostname located ...
0
votes
0answers
12 views

Pidora not reachable through hostname

I'm stuck on the following: I've got a Raspberry Pi with Fedora installed on it, a router, and a Fedora 21 box. ---Router--- | | pidora fedora The router doesn't know the hostname of ...
2
votes
1answer
41 views

uname -n vs hostname

What is the difference between uname -n and hostname? Are there any real differences in what they return? Are there any differences in availability on different OSes? Is one of them included in POSIX ...
2
votes
2answers
56 views

Increasing Productivity When SSH into Multiple Hosts [duplicate]

I work in operations and need to be able to log into multiple servers among a few hundred servers in a productive way. What I mean by productive is this: from the time from when someone asks me to ...
2
votes
2answers
29 views

Use a dynamically obtained hostname with an ssh config entry

Our accounts in our lab are all mounted over NFS and are accessible over all the systems in a subnet. So, effectively we can ssh into any of the machines in the subnet and continue our work. The ...
2
votes
0answers
54 views

How to update ip in hosts file automatically from a VirtualBox guest?

I have a VirtualBox guest running Debian with Bridged Adapter. The host is running on Windows 8. I would like to connect from the host to the guest through a specific port. I came up with the ...
4
votes
2answers
44 views

Persistent Bash Prompt Prefix Linux

I want to have the FQDN as bash prefix instead of just using the hostname. So I can change root@web: ~$ to root@web.domain.tld: ~$ I already know that that is possible by using: ...
0
votes
0answers
33 views

how do I set a hostname in yast?

how do I set the hostname, FQDN, in yast? I ran yast => network devices => network services => hostname/DNS: YaST2 - lan @ arrakis Network Settings ...
0
votes
1answer
194 views

Problem with routing tables network interface in Centos 6.6

I've problem with the routing tables, I've 2 network interface. (2 interfaces with 2 difference network address IP address: 112.xxx.xxx.xxx: static IP and 10.xxx.xxx.xxx local IP) 1: IP address is: ...
5
votes
1answer
433 views

Shell command/script to see if a host is alive?

I'm trying to figure out more ways to see if a given host is up, solely using shell commands (primarily bash). Ideally, it would be able to work with both hostnames and IP addresses. Right now the ...
1
vote
1answer
179 views

Could not reliably determine the server's fully qualified domain name, using ::1 for ServerName

When i start apache service in my debian 7.8 with the command : root@debian:/home/debian# service apache2 start [....] Starting web server: apache2apache2: Could not reliably determine the ...
0
votes
2answers
112 views

Display hostname in ping output

When I ping my Linux server (running in a VM on my Windows7 host) with the following command: ping -a 192.168.56.*** I get the results shown below. Why isn't it resolving my server's name? ...
0
votes
1answer
49 views

Resolve Host's IP on VM

I have kind of tricky situation. I have monitoring tool where all my hosts and their VM's (with IP's and so on) are listed. But what I need is to resolve on which host(need it's ip or hostname) this ...
-1
votes
1answer
62 views

How to change hostname on Linux and make it appear on a network? [duplicate]

First, what is the correct way to change the hostname in Linux ? I followed some steps on the internet and sometimes it does not take effect. Besides, the new hostname does not appear when I ping my ...
0
votes
1answer
39 views

what is the value for setting a hostname in installation of oracle enterprise linux r6u5 should have?

I am installing oracle linux r6u5 for my personal use in vmware workstation. While going through installatio i came to a point where I have to enter hostname, format specified init is ...
1
vote
1answer
96 views

Set hostname without root, and without CAP_SYS_ADMIN

I have an application that I want to be able to change the hostname in Linux. Currently doing so by running the hostname command. I don't want to set CAP_SYS_ADMIN either. I also don't want to edit ...
1
vote
1answer
51 views

Understand hostname and /etc/hosts

In /etc/hostname, I have myname. In /etc/hosts, I have : 127.0.0.1 localhost.localdomain localhost myname ::1 localhost.localdomain localhost myname I have a vague understanding of what ...
3
votes
1answer
103 views

why are there different formats for the hosts file between OpenSuSE and Ubuntu?

How is 127.0.0.1 related to 127.0.0.2? Using ssh to login to tleilax (OpenSuSE): tleilax:~ # tleilax:~ # hostname tleilax tleilax:~ # tleilax:~ # hostname -f tleilax.bounceme.net tleilax:~ # ...
-2
votes
4answers
62 views

How to update the hostname for a computer

On my Lubuntu machine (14.04 LTS), I booted an Arch disk, to have a look around, and now my hostname on my Lubuntu box is stuck as archiso. My hostname is set to what I want it to be, but I can't ssh ...
2
votes
1answer
229 views

Changing the hostname on a Linux Mint desktop to a random value at boot time

When changing the hostname to a random set of alphanumeric characters on a machine running Linux Mint(17.1 Rebecca, Cinnamon 64-bit) I encounter some problems. The following script changes the ...
0
votes
0answers
20 views

What's wrong with the mapping?

I am running two docker containers one is for hadoop basic services and other is for flume. Services are running successfully. I linked two containers env variables are automatically set by docker ...
0
votes
3answers
122 views

Hostname variable doesn't work

I'm on a Raspberry Pi using RPiTC (Raspberry Pi Thin Client). I had made a script with an Hostname variable. It's worked perfectly but today when I had launch my script I saw something strange. My ...
1
vote
3answers
51 views

Can a Linux system have two IP's Simultaneously?

Recently I installed apache2 on Raspbian and after end of installation I entered the following cmd and got two IP's. $ hostname -I 192.168.1.17 192.168.1.24 Of this, I have been using the IP ...
0
votes
1answer
9 views

How can I do to use a email service for a same domain on other server [closed]

For example, the server I am using uses the host name "A.com". Now, I want to send an email to "A@A.com". But the email server isn't on this server. How can I do this?
0
votes
1answer
174 views

Debian stuck in Endless DHCPNAK/OFFER loop unless I ask DHCP server to clear expired leases

have a Marvel Kirkwood device running Debian with 3.16 Kernel. On boot, the DHCPClient gets stuck in a loop and never picks up an ip unless I log onto the dhcp server and ask it to dump the expired ...
4
votes
2answers
576 views

How to decrypt hostnames of a crypted .ssh/known_hosts with a list of the hostnames?

I try to find a script to decrypt (unhash) the ssh hostnames in the known_hosts file by passing a list of the hostnamses. So, to do exactly the reverse of: ssh-keygen -H -f known_hosts Or also, to ...
0
votes
0answers
66 views

Configuration of “Same Host Name” for my all LAN Machines under squid proxy

I am having the network model as Modem N/w Switch ISDN (Airtel) -----------> Server(Centos) [Squid] -----------------> Client Machines. ...
1
vote
1answer
59 views

Will changing hostname in OpenBSD affect installed packages?

With regards to OpenBSD 5.6, suppose I change my hostname in /etc/myname Will doing so affect installed packages, root password or user's passwords? Do I have to reboot my machine after changing my ...
2
votes
2answers
74 views

Sending mail to lan ip failed

In a Ubuntu os, with sendmail installed (maybe as default installed package) but not configured, I tried to type both echo "Text message" | mail <dest_ip_address>\!dest_user and echo "Text ...
0
votes
2answers
130 views

Why can't I change the hostname of my server using sudo? [duplicate]

From a user that is part of the sudoers group, I can normally run any command by doing sudo <command> But the following command fails stating "Permission denied" sudo echo "myhostname" > ...
1
vote
1answer
108 views

How to get NetBIOS name from IP

My friend has a PC that uses Windows, and I want to know the name of that computer. All I know now is that his IP address is 10.0.0.2, how can I get his computer's name from my Linux box?
2
votes
3answers
3k views

CentOS 7 hostname will not change

I have two CentOS 7 VM's running in virtualbox. On each of the machines I want to set the hostname and a static IP address. VM1 works just fine. VM2 does not. I did the same thing on both servers so ...
1
vote
3answers
68 views

What will be prioritized in a conflict between ~/.ssh/config hostname and /etc/hosts?

What if one host is defined in /etc/hosts like: 192.168.0.100 server and one is defined in ~/.ssh/config like: Host server HostName 192.168.0.100 and you ssh into server: ssh ...
1
vote
1answer
49 views

Correct hostname doesn't change in entire system

I have a very strange problem with my hostname on Debian 7+. I've changed the hostname on my new server but for some reason it doesn't change in wierd places. Right now I get the old hostname when I ...
2
votes
2answers
153 views

Understanding hostnames

I was recently setting up an MTA on a VPS, and while configuring it I realized I’m quite confused about the concept and implementation of hostnames in Unix. I have a solid understanding of the DNS, ...
7
votes
4answers
516 views

Where does `hostname` store the hostname that I've set?

This is quite puzzling. Does anyone know where the hostname command stores and reads hostname from? I thought it was /etc/hostname but there is no such file on this Linux system that I'm using. I ...
11
votes
2answers
13k views

How to permanantly change hostname in Fedora 21

I've heard that changing the hostname in new versions of fedora is done with the hostnamectl command. In addition, I recently (and successfully) changed my hostname on Arch Linux with this method. ...
6
votes
1answer
3k views

linux hostname -f command is not working on RHEL

I am running a RHEL 5.7 and the hostname command gives me the correct hostname. But hostname -s and hostname -f return: Unknown host. Why?
0
votes
1answer
309 views

Get hostname to show fqdn without --fqdn

I would like the hostname command to show the fqdn by default on CentOS Linux. What must be done to get this behavior? I am not looking to alias hostname to 'hostname --fqdn' I am looking to modify ...
2
votes
1answer
115 views

Create FQDN in LAN for Windows systems without samba

I just set up my raspberry pi. It is working great and I can easily access it from my local Windows machine using SSH. I gave it a custom hostname. I can acces the pi with this hostname only when the ...
0
votes
2answers
242 views

Can two hosts have the same IP address in /etc/hosts?

can two hosts share the same IP Address without a conflict. This is how my /etc/hosts looks like :- $ cat /etc/hosts 127.0.0.1 localhost 127.0.1.1 debian 127.0.1.1 mini Now as can be seen ...
2
votes
2answers
439 views

how to scp to host connected on a wifi?

I have my MAC on a wifi and am connected via ssh to a linux host. I want to copy some files from the linux host over to my MAC. I know, I can simply run scp on the mac to fetch each file via mac> ...
1
vote
0answers
219 views

Could not open X display after hostname change

I need to change the hostname of my Computer from localhost.localdomain to DESKTOP. However, I can't manage to do this, even after browsing some of the net. I've changed my hostname with hostname ...
0
votes
2answers
653 views

Can ping Debian VM via IP but not via hostname

On my work's network, my new debian headless VM is not visible via its hostname. I'm using: Debian Jessie Virtualbox bridged adapter I can see other VMs on my machine from the headless VM, and I ...
3
votes
1answer
653 views

What is the difference between hostname, hostname --fqdn, and hostname -A

I have a machine I changed the hostname of. I changed it in /etc/hosts, /etc/sysconfig/network, and with hostname command. hostname returns the correct shortname, hostname --fqdn returns the expected ...
1
vote
0answers
126 views

Chrome OS: Crosh Window and Hostname

I have a couple of questions regarding Chrome OS: By default Ctrl+Alt+T opens a crosh window within the Chrome browser. I have the Crosh Window extension, which I would like Ctrl+Alt+T bound to - ...
3
votes
1answer
601 views

Spoofing or removing DHCP client hostname in response to DHCP server

In linux, when my machine requests an IP address it also sends the hostname back to the DHCP server. How can I stop my machine from sending back this hostname? I use dhclient, possibly via ...
14
votes
5answers
87k views

How to change hostname on centos 6.5?

Hi can't seem to change the hostname on my centos 6.5 host. I am following the instructions I found here: http://www.rackspace.com/knowledge_center/article/centos-hostname-change I set my /etc/hosts ...
0
votes
2answers
306 views

Give every IP address a different hostname?

I have a Debian server with 4 IP addresses. All IP addresses use the same hostname. Is it possible to give every single IP address its own unique hostname?
5
votes
2answers
1k views

Determine FQDN when hostname doesn't give it?

In another question, I found that Puppet was generating certificates for my machine's FQDN but not the simple host name. In that example, kungfumaster was the hostname and was the value retrieved by ...