curl will fail with due to paths and permissions

[matiasandina]

This is not your fault, but the first thing the download_data.sh script tries to do is get the massive dataset. First time, I didn't run it with sudo, it took ~1.5 hours and it failed. I ran it again with sudo (another 1.5 h) and it failed again, I think it was due to my path having issues with curl. Not sure if it was a space or a ( but I moved it to a different folder (/home/user/Desktop/) and it didn't complain.

I guess there could be a way to attempt to make folders before the curl command and or check for spaces/special characters?
My idea is to fail early before going for the full download of things

[pjb7687]

I modified the script to ask if the file already exists before downloading. Hope it helps.