# Kill Sync

> Kill and cleanly relaunch Sync.app to remove phantom windows from Mission Control. Use when Sync shows up in Mission Control despite being a menu-bar-only app.

- Skill: `hosaypeng/kill-sync` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add hosaypeng/kill-sync`
- Raw SKILL.md: https://api.skillmd.com/api/skills/hosaypeng/kill-sync/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: hosaypeng (https://skillmd.com/u/hosaypeng)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/hosaypeng/kill-sync

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# Kill Sync Skill

Restart Sync.app to eliminate phantom windows that cause it to appear in Mission Control.

## Execution

Run this command:

```bash
bash ~/.claude/skills/kill-sync/scripts/kill_sync.sh
```

## Presentation

- IF Sync was running → report that it was restarted cleanly.
- IF Sync was not running (`killall` fails) → report that Sync wasn't running. Ask if the user wants to launch it.

## Troubleshooting

- **Sync still appears in Mission Control after kill**: The app may have relaunched itself before the `open` command. Run `killall Sync` again and wait longer before relaunching.
- **"No matching processes" error**: Sync.app isn't running. No action needed.