Windows Robocopy Command: Mirror a Folder Without Deleting the Wrong Files
robocopy /MIR is the fastest way to keep two folders identical on Windows. It is also the fastest way to wipe a backup drive, because a mirror does…
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The shell one-liners everyone pastes but nobody explains
You copy a command from a Stack Overflow answer, a blog post, or an AI assistant. It has six stacked flags. It works. You move on — without ever rea…
A Tiny zsh Trick: Modify Your Last Command
Sometimes I run a command and immediately realize I only need to change one small part of it. For example, say I just converted a video with ffmpeg…