How to Flush DNS Cache on Ubuntu 18.04 LTS?

How to Flush DNS Cache on Ubuntu 18.04 LTS?

First, Right click on the desktop, and then click on ‘Open terminal.’ After that, follow the methods below:-

Method 1: By using systemd-resolve

Step 1: First check DNS statistics by command below:-

sudo systemd-resolve –statistics

Step 2: Flush DNS cache by command below:-

sudo systemd-resolve –flush-caches

Step 3: Now, Check DNS statistics again

sudo systemd-resolve –statistics

Method 2: Using dns-clean

sudo /etc/init.d/dns-clean start

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