Switching between ROS1 and ROS2 in .bashrc

.bash_aliases

srROS1()
{
        unset ROS_VERSION ROS_PYTHON_VERSION ROS_DOMAIN_ID ROS_LOCALHOST_ONLY ROS_DISTRO
        source /opt/ros/noetic/setup.bash
        source /home/georg/catkin_ws/devel/setup.bash
        source /home/georg/paper_ws/devel/setup.bash
        touch /tmp/ros1.tmp
        rm -f /tmp/ros2.tmp || true
}

srROS2()
{
        unset ROS_VERSION ROS_PYTHON_VERSION ROS_PACKAGE_PATH ROSLISP_PACKAGE_DIRECTORIES ROS_ETC_DIR ROS_MASTER_URI ROS_ROOT ROS_DISTRO
        source /opt/ros/foxy/setup.bash
        source /home/georg/ros2_ws/install/setup.bash
        export ROS_DOMAIN_ID=0 # see: https://docs.ros.org/en/foxy/Concepts/About-Domain-ID.html
        touch /tmp/ros2.tmp
        rm -f /tmp/ros1.tmp || true
}

if [ -f /tmp/ros2.tmp ]; then
    srROS2
else
    srROS1
fi