Shell script to create a daily file `20200731.md`

create_dailymd.sh

#!/bin/bash
# ./create_daily.sh [--tomorrow]
# Flags: (--tomorrow) to create the file for tomorrow

if [ "$1" == "--tomorrow" ] ; then
  # not need to be initializaded
  DATE_PARAM="-v +1d"
fi

DAILY_PATH=$(dirname "$0")
DATE_FILE=$(date $DATE_PARAM '+%Y%m%d')
DAILY_FILE=$DAILY_PATH/$DATE_FILE.md

if [ -f "$DAILY_FILE" ]; then
  exit
fi

DATE_TITLE=$(date $DATE_PARAM '+%Y-%m-%d')

cat > $DAILY_FILE << EOF
# $DATE_TITLE

## TODO

- [ ] task1
- [ ] task2
- [ ] task3

## Notes

## Links
EOF