I use these scripts as my calendar.
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These are 2 scripts for calendaring in plantext files.

calendar.txt shows the current day at the top and continues down as far as the number of months you have rendered.

calendar_archive.txt contains all the days before current day.

calendar.txt looks like this:

☼ sun nov 29
water plants
coop fed meeting

◯ mon nov 30

———— December ————

☼ tue dec 01
reading group

☼ wed dec 02
1pm appointment

⇃◌ thu dec 03
open hours at lab


  1. clone or download the repo.

  2. configure calendarender by opening calendarender.sh in your texteditor of choice and modify the line:


to say where your calendar file is. This must be the absolute path to your calendar file. If you don't have one just make an empty txt file there to start.

You might also like to configure recurring events. I have some SERIOUS ROOM FOR IMPROVEMENT here, it's true. Recurring events really ought to be in a separate config file. BUT ALAS, it works for me as recurring events rarely change, it is what it is, recurring events are hardcoded. So, if you have things that happen weekly or monthly and you want them to be auto-rendered, you'll need to modify this code block:

  #every sunday
  if [ "$dayOfWeek" = "Sun" ]; then echo "water plants">> $calendarFile; sunday=$(($sunday+1)); fi
  #second sunday
  if [ "$dayOfWeek" = "Sun" ] && [ "$sunday" -eq 2 ]; then echo "example potluck">> $calendarFile; fi
  #3rd sunday
  if [ "$dayOfWeek" = "Sun" ] && [ "$sunday" -eq 3 ]; then echo "example potluck on third sunday">> $calendarFile; fi
  #last sunday
  if [ "$(date -v1d -v+"$tooFarNum"m -v-1d -v-sun +%a-%b-%d)" = "$(date -v1d -v+"$1"m -v+"$PLACEINMONTH"d +%a-%b-%d)" ] && [ "$dayOfWeek" = "Sun" ]; then echo "last sunday of th>

  #every monday

Anytime something is echoed it gets added to your calendar. Make sure not to get rid of the section sunday=$(($sunday+1)) because that is how the program keeps track of which sunday (etc) we're on.

  1. configure calendarchive

Within calendarchive.sh, find the lines:



and modify them to point to your calendar files. Make sure both those exist at least as blank files.

  1. you might need to chmod +x each of the scripts to make sure they're executable.

  2. You can now just run them with sh calendarchive.sh or sh calendarender.sh but they're easier to use if they're in your path:

Copy the scripts somewhere like ~/bin and add export PATH=$PATH:~/bin to ~/.bashrc


My personal notes folder is plain text synced between machines with SyncThing and edited via Notational Velocity (or sometimes TextEdit, nano, whatever). I keep calendar.txt, calendar_archive.txt and all sorts of other notes in there. I've been calendaring this way since fall of 2019.


calendarender takes one argument and that's the number of months in the future you'd like to render. So say it's currently a day in November and I want to add the days in January to my calendar.txt, I would run calendarender 2. It'll print to the terminal as well as to the file.

calendarender also prints relevant moon phases: new, full, crescents and halfs. On any day that isn't one of those phases a sun is printed. If it's waxing an up-arrow will be printed, waning, down-arrow. It's not the most accurate moon-phase algorithm but close enough for me :)


if you run calendarchive without any arguments it will remove all days from calendar.txt that are before the current day and append them to the bottom of calendar_archive.txt. If it's late at night but before midnight you can run calendarchive 1 and it'll also archive today as well.

you could cron calendarchive to have it automatically run but personally I keep all kinds of notes and things in my calendar and don't want to lose track of anything. So I manually run calendarchive.