Skip to content

Instantly share code, notes, and snippets.

@craigvantonder

craigvantonder/flush-dns.sh

Last active February 3, 2021 04:42
Show Gist options
  • Save craigvantonder/e9ee426f4108094d56e76ba1f756035e to your computer and use it in GitHub Desktop.
Save craigvantonder/e9ee426f4108094d56e76ba1f756035e to your computer and use it in GitHub Desktop.
Download ZIP
Flushing the DNS in Ubuntu 16.04
Raw
flush-dns.sh
#!/bin/bash
# NB: First install nscd with sudo apt-get install nscd
# run this command to flush dns cache:
sudo /etc/init.d/dns-clean restart
# or use:
sudo /etc/init.d/networking force-reload
# Flush nscd dns cache:
sudo /etc/init.d/nscd restart
# If you wanted to refresh your settings you could disable and then run
sudo service network-manager restart
echo "DNS Flushed!";
# Output:
# craig@laptop:~$ sh Desktop/Scripts/flush-dns.sh
# [sudo] password for craig:
# [ ok ] Reloading networking configuration (via systemctl): networking.service.
# [ ok ] Restarting nscd (via systemctl): nscd.service.
# DNS Flushed!
@nonintanon
Copy link

Couldn't get sudo systemd-resolve --flush-caches to work on Ubuntu 16.04 as well.

@lmj0011
Copy link

lmj0011 commented Sep 5, 2018

Couldn't get sudo systemd-resolve --flush-caches to work on Ubuntu 16.04 as well.

systemd-resolved doesn't seem to be an active service by default in Ubuntu 16.04.

You have to start it first with sudo systemctl start system-resolved

@panayotkulchev
Copy link

I had ERR_NAME_NOT_RESOLVED Error in Chrome. sudo /etc/init.d/dns-clean restart helped. Thanks

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment