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Slash command/anti-sleep
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Keep a Mac awake with caffeinate during long builds, downloads, or supervised automation runs.
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Stars43,759
Forks6,465
LanguagePython
LicenseMIT
📦 Ships with agentic-awesome-skills
</> SKILL.md
anti-sleep.SKILL.md
---name: anti-sleep
description: "Keep a Mac awake with caffeinate during long builds, downloads, or supervised automation runs."
category: operations
risk: critical
source: community
source_repo: davidondrej/skills
source_type: community
date_added: "2026-07-07"
author: davidondrej
tags: [macos, caffeinate, operations]
tools: [claude, codex]
license: "MIT"
license_source: "https://github.com/davidondrej/skills/blob/main/LICENSE"
---# Anti-Sleep (macOS caffeinate)
## When to Use
- Use when the user wants the Mac to stay awake during a long supervised task.
- Use when a build, download, or automation run should not be interrupted by sleep.
Keep the Mac awake using the built-in `caffeinate` command. No install needed.
## Quick start — the standard command
```bash
caffeinate -d -i -t 7200 # full power: screen stays on + no idle sleep, for 2 hours
Otherwise run it as a background Bash task. Never block your own foreground shell with it.
## Verify and monitor
```bash
pgrep -fl caffeinate # is it running? shows exact flags
ps -o etime= -p <PID> # how long it's been running
pmset -g assertions | grep -i deny # confirm sleep assertions are active
```
**Gotcha:** `caffeinate` prints nothing and holds the prompt — it looks "stuck" or like Enter wasn't pressed. It isn't stuck. Verify with `pgrep`, not by looking at the terminal.
**Expiry:** with `-t` it exits silently when time runs out — no notification. If the user asks "is it still on?" after hours, check `pgrep` first; it may simply have expired.
## Keyboard backlight
`caffeinate` cannot keep the keyboard backlight on — it has its own inactivity timer with no CLI/API on Apple Silicon (researched 2026-07). Fix is manual, one-time: System Settings > Keyboard > "Turn keyboard backlight off after inactivity" > Never.
## Stop early
```bash
pkill -f "caffeinate -d -i" # or Ctrl+C in the pane running it
```
After starting: confirm to the user the PID, the flags, and the wall-clock time it will expire.
## Limitations
- Adapted from `davidondrej/skills`; verify local paths, tools, credentials, and agent features before acting.
- For commands, remote access, scheduling, browser automation, or file-changing workflows, get explicit user approval and confirm the target environment first.
