Wikipedia explains:. It was originally designed to notify the process of a serial line drop a hangup.
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In modern systems, this signal usually means that the controlling pseudo or virtual terminal has been closed. Many daemons will reload their configuration files and reopen their logfiles instead of exiting when receiving this signal.
How to flush DNS on your Mac
Some sites claim you need to run more commands than this on High Sierra, for example, while others make this command unnecessarily long. Not sure if your DNS reset actually worked? The first is site-specific. For example:. Like this:. Now, with your Console window still open, head back to your Terminal window and run the following command:.
You should see the cache size change in the Console window.
How to Clear DNS Cache in macOS Mojave
In the screenshot above, you can see that our cache size changed considerably after issuing the commands. If you were encountering any issues with name servers, and such, they should now get resolved. Save my name, email, and website in this browser for the next time I comment.
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Flush DNS cache locally in macOS, OSX, Linux and Windows
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