Three approaches to migrate PSPDFKit/Document Engine data to a new S3 bucket — keeping the old bucket online, rewriting per-document storage config in Postgres, or sed-replacing it inside a pg_dump archive.

Simple nftables firewall configuration for Arch Linux.

Passing the TryHackMe ‘Cheese CTF’ challenge inspired by the great cheese talk of THM :)

How a Linux user session initializes — which startup files Bash reads for login, non-login interactive, non-interactive, and remote shells, with a flowchart and reference table.

Configuring nftables as a kill switch to block any external connection without an active VPN connection.