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RC Logr 20200511 112219

Monday, 11 May, 2020

If you are making DNS changes, you may want to flush your local dns responder cache, so here is how to do it. πŸ€–

On a modern Mac, put it in a shell function (c.f. zsh):

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function flushdns (){
  echo "Flushing DNS, enter your user password if prompted:"
  sudo killall -HUP mDNSResponder
  sudo killall mDNSResponderHelper
  sudo dscacheutil -flushcache
}

On Windows, do this in a command prompt:

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  > ipconfig /flushdns

On Linux, it can be app by app or, on Ubuntu/Debian, you can do either of:

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  $ sudo systemd-resolve --flush-caches
  $ sudo /etc/init.d/dns-clean start

RC Logr 20200511 112219 - If you are making DNS changes, … Rick Cogley
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