Welcome to the terminal birthday reminder! Every time you open the terminal it lists every birthday that is in the next 14 days including how old the person turns. That comes in the following format:

"$NAME has birthday in $DAYS days"

And when the birthday finally rolls around:

"$NAME turns $AGE today!"

After running bin/setup a new directory called .birthday_reminder/. In there you will have a release/birthday-reminder. That's where the code lives.
The first time running it, it will ask you to initialize a ~/.birthday_reminder/birthdays.txt file. There you should choose y, otherwise the program doesn't work.

Inside the birthdays.txt you will need to add your birthdays. As of now there is no command-line tool, but that should come before version 1 is released. Currently birthdays are added as follows:

$NAME=$BIRTHDAY

Keep in mind, that $BIRTHDAY needs to be in yyyy.mm.dd format. Doing this wrong will cause the program to panic.

A fair concern is, how this will affect your performance. Running the time command yields following results on an m1 pro:

time ./release/birthday-reminder
No birthdays in the next 14 days!
./release/birthday-reminder  0.00s user 0.00s system 46% cpu 0.011 total

Should be fast enough.