config_to_available_roscore.sh

# this is part of .bashrc / .bash_profile
if [[ $(ps aux | grep bin/roscore | grep -v grep) ]]; then
    export ROS_MASTER_URI=`python -c "import rosgraph; print(rosgraph.Master('ip_checker').getUri())"`
    export ROS_IP=`python -c "import rosgraph; print(rosgraph.Master('ip_checker').getUri().replace('http://','').replace(':11311/',''))"`
    export ROS_NETWORK_INTERFACE=`ifconfig | grep $ROS_IP -1 | awk 'NR==1{print $1}' | sed 's/://g'`
else
    echo "No roscore found, setting ROS_MASTER_URI and ROS_IP to localhost defaults."
    export ROS_MASTER_URI=http://localhost:11311
    export ROS_IP=127.0.0.1
    export ROS_NETWORK_INTERFACE=lo
fi