calculate date to epoch time

Here’s a script to convert date to epoch time on Mac OS.

#!/bin/bash
if [[ -z $1 ]]; then
  echo "Format: date2epoch.sh 2022/01/01-04:58:06"
else
  echo "$1"; date -j -f date -j -f "%Y/%m/%d-%T" "$1" +"%s"
fi

Result

$ ./date2epoch.sh 2022/08/31-22:00:00
2022/08/31-22:00:00
1661997600