navaris-running-commands

Navaris CLI — Running Commands

Covers sandbox exec, sessions, and sandbox attach.

Reference

One-shot exec

navaris sandbox exec <sandbox-id> [flags] -- <command...>

Flag	Purpose
--env KEY=VAL (repeatable)	Set environment variables
--workdir <path>	Working directory inside the sandbox
--timeout <duration>	Bound the request (e.g. 30s, 5m); 0 = no timeout

Stdin is not forwarded in v1 — if you need to pipe input, write to a file inside the sandbox first (via exec), then run the consumer. Use sandbox wait-state before exec if you just started the sandbox.

Sessions

Sessions are persistent shell sessions backed by either direct (raw pty) or tmux. Use tmux when you want reconnectability.

Command	Flags
navaris session create --sandbox <id>	--shell bash (default), --backing direct (default) or tmux
navaris session list --sandbox <id>	—
navaris session get <session-id>	—
navaris session destroy <session-id>	—

Attach

navaris sandbox attach <sandbox-id> [flags]

Flag	Purpose
--session <id>	Existing session to attach to (auto-creates one when omitted)
--shell bash	Shell for auto-created session
--backing tmux	Backing for auto-created session (direct or tmux; default tmux here)

Exit with the shell's normal exit mechanism (e.g. exit or Ctrl-D). For tmux-backed sessions, detach without killing the session with the configured tmux detach key.

Wait for state

navaris sandbox wait-state <sandbox-id> --state running [--timeout 60s] [--interval 500ms]

Workflows

1. One-shot exec with env and workdir

navaris sandbox wait-state "$SANDBOX_ID" --state running --timeout 30s
navaris sandbox exec "$SANDBOX_ID" \
  --env FOO=bar --env BAZ=qux \
  --workdir /srv \
  --timeout 2m \
  -- ./run.sh

2. Persistent tmux-backed session, attach, detach cleanly

SESSION_ID=$(navaris session create --sandbox "$SANDBOX_ID" --backing tmux --output json | jq -r '.SessionID')
navaris sandbox attach "$SANDBOX_ID" --session "$SESSION_ID"
# work in the shell; detach via tmux prefix + d to keep the session alive
# reattach later with the same command

If you want a throwaway attached shell, skip session create and just run navaris sandbox attach "$SANDBOX_ID" — it auto-creates a tmux-backed session.

3. Wait for running, then exec

SANDBOX_ID=$(navaris sandbox create --name build-$$ --image alpine/3.21 --wait --output json | jq -r '.SandboxID')
navaris sandbox wait-state "$SANDBOX_ID" --state running --timeout 60s
navaris sandbox exec "$SANDBOX_ID" -- apk add --no-cache curl

Skipping wait-state after create can produce errors because create returns as soon as the operation is queued (unless --wait was passed).

4. Exec vs session — pick the right tool

You need…	Use
Stateless, short command (seconds)	sandbox exec
One-shot command needing a longer wait	sandbox exec --timeout <long-duration>
Long-running process you want to monitor	session create --backing tmux + sandbox attach
Multiple related commands with shared env/cwd	session create --backing tmux + sandbox attach
Interactive shell	sandbox attach (auto-creates a tmux-backed session)
Need to reconnect after a client drop	session create --backing tmux (not direct)

Common errors

Cobra's SilenceErrors: true setting plus a bare os.Exit(1) in cmd/navaris/main.go means client errors are not currently printed to stderr. Check $? to confirm the command failed, and read the daemon logs for the underlying cause. The symptom strings below are what the client would render if the suppression were lifted.

Symptom	Cause	Fix
api error 404: session: not found	Session was destroyed, the sandbox was restarted (which exits all sessions regardless of backing), or the client disconnected from a direct-backed session	Recreate with session create; use --backing tmux to survive client disconnects (but not sandbox restarts)
Attach WebSocket drops mid-session	Daemon restart or network blip	Re-run navaris sandbox attach; tmux-backed sessions preserve state
context deadline exceeded on exec	--timeout elapsed; the process may still be running server-side	Check with navaris sandbox exec <id> -- ps aux or wait and retry; do not assume the command was cancelled
api error 422: sandbox must be running to create session	session create called before the sandbox reached running state	Insert navaris sandbox wait-state <id> --state running before session create
dial attach: failed to WebSocket dial: expected handshake response status code 101 but got 401	NAVARIS_TOKEN missing or wrong for the attach WebSocket handshake	Re-check NAVARIS_TOKEN; run navaris project list to verify auth works