Torgeek
- How do I fix unable to resolve host?
- What does could not resolve host mean?
- How do I fix unable to resolve host name or service not known?
- How do I resolve a hostname in Linux?
How do I fix unable to resolve host?
The hostname is taken from /etc/hostname file. Since it is missing from here, the system is not able to figure out the hostname and thus it throws the error 'sudo: unable to resolve host'. To fix this, edit this file and add a new line and set the loopback address with the hostname.
What does could not resolve host mean?
This error indicates that the domain name servers (DNS) that translate your domain name into an IP address failed to respond during the test cycle. You will need to contact your DNS service provider (which is often your domain registrar) to determine the cause of the outage and any corrective action taken.
How do I fix unable to resolve host name or service not known?
So simply modify the /etc/hosts with the correct hostname, and sometimes you may not find the hostname in the following file without dwelling much. Add the highlighted line in /etc/hosts and make sure to replace the machine with the actual hostname name, or else your problem will not be resolved.
How do I resolve a hostname in Linux?
Get the Hostname From an IP Address on the LAN
When we need to get the hostname of a machine on the same LAN and without a reverse DNS, we can use commands like nmblookup, nbtscan or avahi-resolve. The first two commands are used to lookup NetBIOS names.
