Terminal Session Run — effect skill for code & terminal

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A terminal types a command, then streams real-looking log output with green checks.

What it does

Built on Terminal Simulator by HeyGen (HyperFrames), Apache-2.0. The write-up and recipes below are varg's.

Dark terminal with traffic lights, prompt types at human speed, output lines roll in faster, old lines scroll off the top.

When: CLIs, deploy tools, agents that run in the terminal.

Watch out: Do not stream walls of logs; keep 4–8 meaningful lines and fake-skip the rest with "…".

Timing: Typing 50–100 ms/char; output lines every 80–200 ms; 0.5 s pause before the final success line.

Also called: CLI demo, terminal window, command run

In FFmpeg

# record a reproducible session with VHS (uses ffmpeg under the hood)
# demo.tape: Set TypingSpeed 75ms\nType "npx varg render"\nEnter\nSleep 3s
vhs demo.tape

In HyperFrames

npx hyperframes add terminal-simulator

Or code-terminal-run for one command with a token-chrome panel.

In Remotion

// npx shadcn@latest add @remocn/terminal-simulator
<TerminalSimulator commands={[{cmd:'npx varg render', output:['✓ scenes 4','✓ audio','✓ done in 38s']}]}/>

In CapCut

Record the real terminal (or a VHS tape), trim the waits, speed up output 2×, zoom on the final line.

Ready-made components

Where this comes from

Use when

Not for

Install

Example output

https://s3.varg.ai/how-to/previews/7b3d64d5d345/take-terminal-session-run.mp4 — The Terminal Simulator component used as its header comment describes, with demo copy (credit: Rendered by varg · HyperFrames Terminal Simulator, https://hyperframes.heygen.com/catalog/components/terminal-simulator)

More code & terminal skills

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