.tip

Mar 30, 2026 · one of the small things

dig +short answers the DNS question without the essay

nslookup and plain dig print a page for one record.

dig +short api.example.com
dig +short api.example.com @1.1.1.1    # ask a specific resolver
dig +short -t TXT _dmarc.example.com

Comparing the answer from your resolver against a public one is the fastest way to spot stale DNS during a migration.

shelloperations

~/tips/today — 2026-09-04

~cat tips/today

Session cookies: HttpOnly, Secure, SameSite=Lax

securityhttp

Three attributes, each closing a class of attack. HttpOnly keeps scripts from reading it. Secure keeps it off plain HTTP. SameSite=Lax stops it being sent on cross-site POSTs, which is most CSRF.

Set-Cookie: session=...; HttpOnly; Secure; SameSite=Lax; Path=/; Max-Age=1209600

Strict breaks arriving from an external link while logged in. Lax is the default worth keeping.

↵ open y yesterday l ls /tips

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