Admin hints

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Cheat sheets

DNS

Get your IP address

$ dig +short +time=2 +tries=1 myip.opendns.com @resolver1.opendns.com

Remove empty and comment lines

$ grep -Ev "^(\s*|(//|[;#]).*)$" <file>
Retrieved from "https://lars.timmann.de/wiki/index.php?title=Admin_hints&oldid=2800"