pub fn print_usage() {
println!(
r#"Usage: start [options] [--] <command> [args...]
start <command> [args...]
start --status <uuid> [--output-format <format>]
start --list [--running] [--output-format <format>]
start --upload-log <uuid-or-session-name>
start --stop <uuid-or-session-name>
start --terminate <uuid-or-session-name>
start --attach <uuid-or-session-name> [--read-only]
start --resume <uuid-or-session-name> [-- <command>]
start --resume-all [--output-format <format>]
start --alias <uuid-or-session-name> <name>
start --rename <uuid-or-session-name> <name>
Options:
--help, -h Show this usage and exit successfully
--isolated, --isolation, -i <env> Run in isolated environment (screen, tmux, docker, ssh)
--attached, -a Run in attached mode (foreground)
--detached, -d Run in detached mode (background)
--session, -s <name> Session name for isolation
--session-id <uuid> Session UUID for tracking (auto-generated if not provided)
--session-name <uuid> Alias for --session-id
--append-attempt Run as the next attempt of the existing --session-id execution
--continues <id> Record that this execution continues an earlier one
--image <image> Docker image (optional, defaults to OS-matched image)
--volume, -v <spec> Docker bind mount/volume host:container[:mode] (repeatable, docker only)
--mount <spec> Docker --mount spec (repeatable, docker only)
--env, -e <KEY=VALUE> Environment variable for docker container (repeatable, docker only)
--label <KEY=VALUE> Container attribution (repeatable, docker only; start-command.* reserved)
--privileged Run docker container in privileged mode (docker only)
--init, --no-init Run tini as PID 1 to reap orphaned processes (docker only; default START_COMMAND_DOCKER_INIT=1)
--network <name> Connect to a named network (repeatable, docker only)
--network-alias <alias> Add alias to the first network (repeatable, docker only)
--on-kill-resume <N> Resume a killed (exit 137 / OOM) detached docker session up to N times
--recovery-command <cmd> Command to run in the same container on such a resume
--on-kill-resume-delay <min[-max]> Wait a random number of seconds before each such resume (default 0)
--memory <size|N%|MIN%-MAX%> Docker RAM cap; percentages use daemon capacity
--memory-reservation <spec> Soft memory limit (Docker size or N%, below --memory)
--memory-swap <spec> Combined memory+swap cap (defaults to memory, no extra swap)
--cpus <n|N%|MIN%-MAX%> Docker CPU cap; ranges draw once per creation
--on-kill-resume-memory <spec> New memory cap before a qualifying OOM recovery
--cpu-penalty Enable delayed Docker CPU penalty (default off)
--cpu-penalty-cpus <n> Penalty cap (default 2 CPUs)
--cpu-penalty-trigger <p%> Busy threshold (default 95% of usable CPUs)
--cpu-penalty-trigger-window <d> Fully covered busy window (default 15m)
--cpu-penalty-release <p%> Quiet threshold (default 65% of penalty cap)
--cpu-penalty-release-window <d> Minimum quiet/capped window (default 15m)
Durations accept ms, s, m, h; --status reports penalty state
--endpoint <endpoint> SSH endpoint (required for ssh isolation, e.g., user@host)
--isolated-user, -u [name] Create isolated user with same permissions
--keep-user Keep isolated user after command completes
--keep-alive, -k Keep isolation environment alive after command exits
--auto-remove-docker-container Always remove docker container after exit (compatibility alias)
--always-cleanup-container Always remove docker container after exit
--keep-container Keep docker container filesystem after exit
--keep-container-on-fail Remove successful docker containers, keep failed or OOM-killed ones
--shell <shell> Shell to use in isolation environments: auto, bash, zsh, sh (default: auto)
--use-command-stream Use command-stream library for execution (experimental)
--status <id> Show status of execution by UUID or session name (--output-format: links-notation|json|text)
--list List all tracked executions (--output-format: links-notation|json|text)
--running With --list, only report executions that are still running
--upload-log <id> Upload a sanitized copy of the stored log privately
--no-sanitize With --upload-log, explicitly upload without secret redaction
--stop <id> Ask a detached isolated execution to stop gracefully
--terminate <id> Terminate a detached isolated execution immediately
--attach <id> Attach to a running detached isolated execution
--read-only With --attach, follow output without sending input
--resume <id> Restart a stopped detached execution in the same environment
(append -- <command> to run a different command there)
--remove-original With legacy snapshot resume, remove the stopped original after launch
--remove-original-after <s> Remove it only if the replacement still runs after <s> seconds
--snapshot-wait <s> Wait up to <s> seconds for another snapshot on this host (exit 75 after)
--snapshot-disk-wait <s> Wait up to <s> seconds for free disk instead of refusing (exit 75 after)
--snapshot-size-hint <bytes> Use this writable-layer size instead of docker inspect --size
--snapshot-prepare <cmd> docker exec <cmd> in the started original before it is snapshotted
--resume-all Re-attach or reconcile every execution still marked running
--cleanup Clean up stale "executing" records (crashed/killed processes)
--cleanup-dry-run Show stale records that would be cleaned up (without cleaning)
--cleanup <id> Remove a Docker execution's containers and snapshot images (never forced)
--cleanup-dry-run <id> Show the containers and images --cleanup <id> would remove
--alias <id> <name> Add a name the execution can be addressed by
--rename <id> <name> Rename the execution, keeping its previous name as an alias
--version, -v Show version information
Examples:
start echo "Hello World"
start bun test
start --isolated tmux -- bun start
start -i screen -d bun start
start --isolated docker -- echo 'hi' # uses OS-matched default image
start --isolated docker --image oven/bun:latest -- bun install
start -i docker -v ~/.config/gh:/root/.config/gh -e TOKEN=abc -- gh repo list
start -i docker --image konard/hive-mind-dind:latest --privileged -- solve ...
start -i docker --init -d -- solve ... # tini reaps zombies of long-running tasks
start --isolated ssh --endpoint user@remote.server -- ls -la
start --isolated-user -- npm test
start -u myuser -- npm start
start -i screen --isolated-user -- npm test
start --status a1b2c3d4-e5f6-7890-abcd-ef1234567890
start --status a1b2c3d4 --output-format json
start --list
start --list --output-format json
start --list --running
start --upload-log my-screen-session
start --stop my-screen-session
start --terminate my-screen-session
start --attach my-docker-session
start --attach my-docker-session --read-only
start --resume my-docker-session
start --resume my-docker-session -- bash
start --resume-all
start --session-id <uuid> --append-attempt -- npm test
start --continues <uuid> -- npm test
start --rename <uuid> nightly-build
start -i docker -d --on-kill-resume 3 --recovery-command 'solve --resume' -- solve
start -i docker -d --on-kill-resume 3 --on-kill-resume-delay 30-90 -- cargo test
start --cleanup-dry-run
start --cleanup
Features:
- Logs all output to temporary directory
- Displays timestamps and exit codes
- Auto-reports failures for NPM packages (when gh is available)
- Natural language command aliases (via substitutions.lino)
- Process isolation via screen, tmux, or docker"#
);
}