Get to know the Linux hosts file and how to use it Your email has been sent If you're new to Linux, there's a very handy file you'll want to learn about right away. Jack Wallen introduces you to the ...

When it's enabled, trying to hit "production.server.com" adds a second entry to the DNS resolver cache, one with the real IP address of the production server, in addition to the entry I listed above ...

How to remove or update a single entry from the SSH known_hosts file Your email has been sent SSH holds fingerprints of your remote machines in the known_hosts file. Sometimes you might need to remove ...