display time per minute using start and end date time

Question

I want to write a script that will display the time per minute between two date and time. The Start and End time gap can be anything, could be 5minutes, 3hours, 30days, etc.

Example:

Start time: 2019-12-31 23:57:00
End Time  : 2020-01-01 00:03:00

Result:

 2019-12-31 23:57:00
 2019-12-31 23:58:00
 2019-12-31 23:59:00
 2020-01-01 00:00:00
 2020-01-01 00:01:00
 2020-01-01 00:02:00
 2020-01-01 00:03:00

Edit: Im getting the error below when using the -d option.

     date: Not a recognized flag: d
     Usage: date [-u] [+"Field Descriptors"]

Answer 1

With GNU date that can handle expressions like +1 minute, it's pretty easy:

#!/bin/bash
start='2019-12-31 23:57:00'
end='2020-01-01 00:03:00'

date=$start
while [[ $date < $end || $date == $end ]] ; do
    echo "$date"
    date=$(date -d "+1 minute $date" '+%Y-%m-%d %H:%M:%S')
done