apt-get lock function

apt_lock.sh

apt_wait() {
  # Check if dpkg or apt-get lock is held by another process
  locks=(/var/lib/dpkg/lock /var/lib/apt/lists/lock)
  for lock in "${locks[@]}"; do
    echo "Waiting for lock on $lock..."
    while fuser "$lock" >/dev/null 2>&1; do
      sleep 1
      echo -n "."
    done
    echo
  done

  # Check if unattended-upgrades log is locked
  if [ -f /var/log/unattended-upgrades/unattended-upgrades.log ]; then
    echo "Waiting for lock on unattended-upgrades.log..."
    while fuser /var/log/unattended-upgrades/unattended-upgrades.log >/dev/null 2>&1; do
      sleep 1
      echo -n "."
    done
    echo
  fi
}