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Every zsh pane gets a throwaway ZDOTDIR under the temp directory, four redirector files in it, and the pane's own teardown removes it — stop a server cleanly and it leaves none. A server that is killed never runs that teardown, and nothing ever goes back to look: this machine had 3,850 of them, from months of crashes and `kill -9`s. Same shape as the socket a killed daemon used to leave behind, and the same answer: a later startup is the only thing in a position to notice, so it sweeps beside the endpoint cleanup. Timid on purpose. A directory goes only when the name is exactly ours, the pid in it parses, and that pid is not a live process — so a running daemon's directories are never touched, and a pid since reused by something else just waits for another day. Verified after the sweep: 3,850 down to 14, and every one of those 14 belongs to a live process, the installed tty7.app's daemon among them. `process_alive` was wrong about that, which the test caught. `kill(pid, 0) == 0` is only half the answer: `EPERM` means the process exists and belongs to someone else, and reading that as dead would have had the sweep delete a live owner's directory. Both callers wanted the other reading — one decides whether to clean up after a daemon, the other whether to delete its files. The two tests that bind an endpoint now hold a lock while they do. `set_config_dir` is first-wins, so every test in the process shares one socket path, and the one added here made the pair flaky together while each passed alone.
tty7
A terminal workbench: persistent sessions, remote work, agents.
Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty
English · 简体中文
Why
- Performance — ~2× the throughput of Alacritty, Ghostty, or Kitty (benchmarks)
- Persistent sessions — quit or reboot; your shells and supported agent sessions keep running, no tmux
- Editor-grade input — suggestions, completion, highlighting, history search
- Remote development — files, repos, panes, and git data stay on the remote machine
- Native SSH — profiles, SFTP, port forwarding, and jump hosts
- Agent-aware — Claude Code, Codex & co.: status, notifications, git context
- CLI + Skills — agents create panes, run commands, and inspect output
Install
Native builds for macOS, Windows, and Linux on Releases:
| macOS | …-macos-arm64.dmg · …-x86_64.dmg |
drag into Applications |
| Windows | …-setup.exe · portable ….zip |
|
| Linux | …-x86_64.AppImage |
chmod +x and run — X11/Wayland libraries bundled |
What's inside
| Editor-grade input | ghost suggestions from history · explained tab completion · syntax highlighting · multi-line editing · click places the caret · ⌃ R fuzzy history |
| Window | tabs & splits · ⌘ P palette · ⌘ F scrollback search · nine themes · IME |
| Agent-aware | per-pane detection (18 CLIs): status dot · notifications · branch + diff · resume after reboot · tray icon when input is needed |
| Remote workspaces | remote files, repos, changes, diffs, worktrees, tabs, and panes · reconnect from any client and continue where you left off |
| CLI + Skills | bundled tty7 CLI · agent skill · pane/workspace control · real PTY commands · output, process, port, and agent status |
| SSH | native russh stack: profiles with keychain secrets · SFTP panel · port forwarding · jump hosts · one-time, unprivileged tty7-server install |
Full documentation lives in docs/ —
keyboard shortcuts ·
config.json ·
CLI reference. The agent-facing CLI interface is also
documented in skills/tty7/SKILL.md.
Install the skill with:
npx skills add l0ng-ai/tty7 # install
npx skills update tty7 # update later
Benchmarks
Same machine, same day, same 155×40 grid — Apple M1 Pro, macOS 26.3.1, five-run averages (2026-07-04):
| tty7 | Alacritty | Ghostty | Kitty | |
|---|---|---|---|---|
Plaintext I/O — 11 MB cat (lower = better) |
95 ms | 239 ms | 179 ms | 185 ms |
| DOOM-fire frame rate (higher = better) | 888 fps | 485 fps | 552 fps | 617 fps |
| Cold-launch memory | 116 MB¹ | 105 MB | 128 MB | 130 MB |
¹ GUI 105 MB + the persistent server 11 MB.
Methodology and one-command reproduction: scripts/bench/.
Built on gpui and alacritty_terminal · Apache-2.0 · Discord · Changelog