bracketbot wifi jetson

connect-wifi.sh

#!/usr/bin/env bash
# bbssh: try bracketbot-<ID>.local, auto-increment ID up to 10 tries, then ssh on success
set -euo pipefail

if [[ $# -lt 1 ]]; then
  echo "Usage: $0 <ID> [ssh-args...]" >&2
  exit 1
fi

ID="$1"; shift || true
TRIES=10

host_for() { printf "bracketbot-%s.local" "$1"; }

ping_01s() {
  local host="$1"
  # Linux: -W (ms) with iputils ping; macOS/FreeBSD: -W (ms) also works for recent versions.
  # Fallback to BSD-style: -t (ttl) + short sleep guard.
  if ping -c1 -W 100 "$host" >/dev/null 2>&1; then
    return 0
  fi
  # Try BSD-ish variant if first failed quickly (option-wise)
  if ping -c1 -t 1 "$host" >/dev/null 2>&1; then
    return 0
  fi
  return 1
}

try=0
while (( try < TRIES )); do
  host="$(host_for "$ID")"
  echo "[bbssh] Probing ${host} (attempt $((try+1))/$TRIES)..."
  if ping_01s "$host"; then
    echo "[bbssh] Host is up: $host"
    exec ssh "bracketbot@${host}" "$@"
  fi
  echo "[bbssh] No response within 0.5s. Incrementing ID."
  # Increment while preserving any leading zeros (e.g., 001 -> 002)
  if [[ "$ID" =~ ^0*[0-9]+$ ]]; then
    width=${#ID}
    num=$((10#$ID + 1))
    printf -v ID "%0${width}d" "$num"
  else
    # If not purely numeric, just append +1
    ID="${ID}1"
  fi
  ((try++))
done

echo "[bbssh] Gave up after $TRIES attempts." >&2
exit 1