download_on_time_data.sh

#!/bin/bash


#
# Reference : http://www.transtats.bts.gov/DL_SelectFields.asp?Table_ID=236&DB_Short_Name=On-Time
#
now=`date +"%Y-%m-%d" -d "01/01/1987"`
end=`date +"%Y-%m-%d" -d "05/01/2015"`
# end=`date +"%Y-%m-%d"`

while [ "$now" != "$end" ] ;
do
        now=`date +"%Y-%m-%d" -d "$now + 1 month"`;
        now_new=`date +"%Y_%-m" -d "$now"`;
        echo "http://www.transtats.bts.gov/Download/On_Time_On_Time_Performance_$now_new.zip"
        wget -c "http://www.transtats.bts.gov/Download/On_Time_On_Time_Performance_$now_new.zip"
done