postinstall.sh

#!/usr/bin/env bash
set -e

GROUP_NAME="gpuman"
DATA_DIR="/var/lib/gpuman"

echo "[gpuman] Running post-install setup..."

# Must be run as root
if [[ "$EUID" -ne 0 ]]; then
  echo "[gpuman] ERROR: postinstall must be run as root"
  exit 1
fi

# -------------------------------
# Create group if it doesn't exist
# -------------------------------
if ! getent group "${GROUP_NAME}" > /dev/null; then
  echo "[gpuman] Creating group: ${GROUP_NAME}"
  groupadd --system "${GROUP_NAME}"
else
  echo "[gpuman] Group ${GROUP_NAME} already exists"
fi

# -------------------------------
# Create data directory
# -------------------------------
echo "[gpuman] Ensuring ${DATA_DIR} exists"
mkdir -p "${DATA_DIR}"

# -------------------------------
# Set ownership & permissions
# -------------------------------
echo "[gpuman] Setting ownership and permissions on ${DATA_DIR}"
chown root:"${GROUP_NAME}" "${DATA_DIR}"
chmod 2775 "${DATA_DIR}"

# -------------------------------
# Final instructions
# -------------------------------
cat <<EOF

[gpuman] Installation complete.

To enable and start the daemon:
  sudo systemctl daemon-reload
  sudo systemctl enable gpumand.service
  sudo systemctl start gpumand.service

To allow a user to run the gpuman CLI without sudo:
  sudo usermod -aG ${GROUP_NAME} <username>
  (log out and log back in)

EOF