What this snippet does
ufw is a friendly front end over the kernel's netfilter rules.
Expected output
[1] 443/tcp ALLOW IN Anywhere
Why practise typing this
Typing networking code builds muscle memory for the symbols and indentation Linux uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
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