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

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ssh_config: Add a host section that matches IPs even when connecting via hostname

I want a host section in my ssh config that matches any local IP: Host 10.* 192.168.*.* 172.31.* 172.30.* 172.2?.* 172.1?.* setting setting ... This works as long as I connect directly to a ...
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1answer
817 views

Display hostname in GDM3 on Fedora 19 at login screen

I'm managing almost 100 lab PC's running Fedora 19. It's difficult to manage because it seems like no where that I can display the hostname at the login screen. GDM version: gdm-3.8-3.2
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28 views

Why doesn't 'sudo' skip hostname-checking when the command can be run on 'ALL' hosts?

The sudoers file provides a way to limit which "runas" entries apply to which hosts. When running a command with sudo, the hostname is checked against the hosts on which a "runas" entry applies. When ...
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3answers
2k views

How to get the computer name (not its hostname)?

All the results of my searches end up having something to do with hostname or uname -n. I looked up the manual for both, looking for sneaky options, but no luck. I am trying to find an equivalent of ...
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1answer
27 views

CentOS 6.7: 'No address associated with name' as 'hostname --fqdn' output

please, before read this question, I would pray you to consider that I'm a Linux newbie and that I really need a help. I apologize in advance if the question will be trivial or stupid, I will search ...
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2answers
253 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 ...
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2answers
31k views

Unable to resolve hostname

So I try to do: ssh $(hostname) and it tells me: ssh: Could not resolve hostname woofy: Name or service not known It knows that its own hostname is "woofy"; why can't it connect to itself?
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How to change the hostname of a linux machine using terminal?

I logged in for the first time, opened terminal, and typed in ‘hostname’. It returned ‘localhost.localdomain.com’. Then I logged as the root user in terminal using the command, ‘su –‘, provided the ...
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CentOS 6 not registering new hostname on Windows Server 2003

I rebuilt a Windows 7 Workstation with CentOS 6.5. The Windows 7 had a host name aaa attached to domain ddd.local. The new CentOS hostname is bbb. When I try to ping it: $ ping bbb ping: unknown ...
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438 views

Avoid overwriting of hostname by transient hostname at reboot

My server is CentOS 7.1. After reboot the hostname is overwritten by the transient hostname (mail) and I can't find a way to avoid that. Maybe AutoDNS and the MX record mail causes that? ...
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1answer
49 views

Telnetting the local port working but trying with ip not working

My question is similar but opposite to to Telnetting the Local port not working but trying the ip working For me, telnet to the local port works but trying with IP does not work :( I am running ...
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3answers
331 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 ...
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3answers
13k views

Unable to set hostname for use within network

I am having a lot of trouble setting up a hostname for my home server for use within my home network. My home server is running Ubuntu 12.04 LTS and all packages are up to date. Management of this ...
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5answers
2k views

Setting a network hostname doesn't work

I'm on a Kubuntu 11.10 and I'm having trouble setting a hostname on the network. I already tried changing send host-name "myhostname" in /etc/dhcp/dhclient.conf or /etc/dhcp3/dhclient.conf with a ...
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1answer
47 views

Browse by hostname from internet browser

I can browse my server site using ip:8080 which is inside my home network.But I am not able to browse using hostname:8080 I do not have dns server. I have edited /etc/hosts file to include ...
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1answer
94 views

What is the best way to keep a Linux server's hostname consistent?

We have a server with a CentOS distribution of Linux. It lost its hostname in the month somehow, since our last reboot. We ran an ETL (extract, transform, load) job last week, and part of that ...
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5answers
173k views

How to change hostname on CentOS 6.5?

I 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 ...
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1answer
16 views

set up pfctl to forbid local applications accessing a specific hostname

I am an OSX user, and I want to ban some hostnames, with which some local applications may do nasty things. pfctl is the default firewall on OSX 10.11 El captain. So, how to block the specific ...
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2answers
811 views

Host name changed remotely by wifi?

Am am currently visiting TU Wien and today I connected my Debian Linux laptop to their eduroam wlan using wpa_supplicant and the credentials of my home institute - as always when I am visiting another ...
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1answer
384 views

How to set the fully qualified hostname on CentOS 7.0?

How do I set the fully qualified hostname on CentOS 7.0? I have seen a few posts online for example using: $ sudo hostnamectl set-hostname nodename.domainname However, running domainname returns ...
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4answers
1k views

How to append / extend zshell completions?

I am using zsh with oh-my-zsh. Unfortunately, oh-my-zsh does not use file ~/.ssh/config for hostname auto-completion (see Issue #1009, for instance). This could easily archived by the following code: ...
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2answers
2k 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? ...
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2answers
9k views

Using DNSMasq for Local Hostname Resolution

I'm working on setting up a home intranet for me and my roommates. My idea is that we'll be able to store things like past utility bills in a place that's more accessible than a drawer in the kitchen ...
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Changing hostname disturbs the system and DE's like KDE, Gnome, etc… What can I do to allow it anyway?

Long time ago I started to develop some kind of stealthmode-demon in c++. Part of this is to be only run as root and another part of it is, to change the hostname to a randomn generated one. I ...
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2answers
96 views

What's the use for the special ipv6 addresses in /etc/hosts?

I have the following block in my /etc/hosts: # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ...
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447 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 ...
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2answers
42 views

How to change ThisName@HostName ~ $

I am quite new to Linux and I was wondering how to change the following when in terminal permanently. When I set up my computer I used a name that I now want to change: In terminal, the name I want ...
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1answer
22 views

Local hostname not displayed by script at boot

I have written a very simple bash-code which is trying to send the local hostname of the system to a php-page, basically using: curl mypage.com/?hostname=$HOSTNAME When I run this bash file "per ...
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1answer
41 views

Script To Update Multiple Hostnames

Needing a script to read row by row, then ssh into the machine and update the hostname of the machine, then exit and continue with the next row. We have a cvs file that contains the previous hostname ...
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1answer
18 views

How to change hostname of a SLES11 Server

How do I change and check the hostname of a SLES11 based system?
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408 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 ...
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1answer
74 views

how to setup VPS domain registered via different service?

I have a domain that was registered with network solutions and my vps is hosted via hostWinds. I got a cheap/budget VPS because I'm a developer by trade and would rather know how to set all this ...
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1answer
476 views

Obtain the “pretty” hostname in bash

On my Fedora 19 system, I am able to change the system hostname with hostnamectl. This allows me to set several things, such as the static (normal) hostname, as well as a "pretty" hostname. Is there ...
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1answer
44 views

how to ensure stable domain names for newly-provisioned cloud server instances?

I've been playing with server configuration management tool Ansible, whose use often depends on reference to a local inventory file containing arbitrary host names. For example, # file: my_hosts ...
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215 views

CentOS DNS Server for localhost

I need install the DNS Server (BIND - CentOS 7) to work only locally. I mean, the same CentOS that has the BIND will connect/search in the DNS, any other host will 'connect' with this machine. The ...
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3answers
293 views

How to resolve hostnames with Raspbian 5/5/2015?

I'm relatively new to Linux and falling down the tree and hitting every branch on the way down (it seems). I'm trying to share an NTFS drive, or a directory on the drive, via samba, and I have found ...
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3answers
740 views

How to show the host name in Linux commandline prompt

I have several VMs and right now my command-line prompt looks like -bash-3.2$; identical on every VM, because it doesn't contain the host name. I need to always see which VM I'm on using hostname ...
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1answer
117 views

Why does sudo need the loopback interface?

We were trying to install our software on an Ubuntu machine. To do so, we needed root privileges. Basically, all we needed to do was run a runnable jar like: sudo java -jar runnableJar.jar. All such ...
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3answers
9k views

What is sendmail referring to here?

When I install sendmail from the debian repos, I get the following output: Disabling HOST statistics file(/var/lib/sendmail/host_status). Creating /etc/mail/sendmail.cf... Creating ...
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2answers
11k views

How to add an IP to hostname file

I have a Centos 5.8 server. How can I add my server IP address 192.168.20.254 so that it reflects when I run the command hostname -i At the moment the command only shows the loopback IP 127.0.0.1 and ...
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3answers
45k views

Hostname and IP address mapping in /etc/hosts

In my linux machine, when I run hostname, it shows mongodb, but when I run host mongodb, it shows: mongodb@mongodb:/var/hadoop/hadoop-1.2.1/bin$ host mongodb Host mongodb not found: 2(SERVFAIL) My ...
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8answers
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How to get the hostname along with the domain name?

In unix (Solaris) is there any command that returns the hostname and domain name together? For instance: hostname -> servername domainname -> us.xyz.com I need : servername.us.xyz.com
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1answer
360 views

service start: HOSTNAME: command not found

Whenever i try to start a daemon service with the service name start I get the following error: /etc/sysconfig/network: line 3: HOSTNAME: command not found MySQL Daemon failed to start. Starting ...
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2answers
74 views

Setting a domain name in LAN

I am developing a web page using Apache Web Server in my pc. When I want to open it in the browser I use the ip, for example: http://192.168.1.6/proyect My host is part of a local network (a laptop ...
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1answer
179 views

Alias name for ip address [closed]

I have a website which is hosted in local Server (CentOS 5.x) (Hostname: xxx.yyy.local, IP : 192.168.5.25). I can browse the site typing the server IP address in the browser from my Local Network e.g: ...
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73 views

any option to ignore a dns server ip from /etc/resolv.conf when doing nslookup?

We have a list of dns server IPs in /etc/resolv.conf. When doing nslookup for a particular scenario we would like to ingore the second entry below, so that naming resolution occurs via other 3 DNS ...
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2answers
564 views

CentOS 6.5 hostname on VPS

I'm trying to change the hostname on my fresh CentOS 6.5 image (VPS) via SSH. The sources I've found all say the hostname can be permanently changed in /etc/sysconfig/network and /etc/hosts, and that ...
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1answer
42 views

Solaris 11 hostname

I'm new with Solaris. I cloned a Solaris 11 machine and now I'm trying to change it so that it gets the hostname and DNS name from a DHCP client. I tried following the instructions here: ...
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1answer
15 views

How do I assign hostnames for machines on my network?

I'm using Terminal on a Mac running OS X Yosemite. Wondering how I can assign hostnames so that I can run telnet instead of using the ip address.
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3answers
206 views

How to change bash prompt string in current bash session? [duplicate]

I have a following bash prompt string: root@LAB-VM-host:~# echo "$PS1" ${debian_chroot:+($debian_chroot)}\u@\h:\w\$ root@LAB-VM-host:~# hostname LAB-VM-host root@LAB-VM-host:~# Now if I change ...