habits.txt 0.1.3

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habits.txt

habits.txt is a plain text habit tracker.

Concepts

Time-bound

A habit is time-bound. It has a start date, and eventually an end date. It means with habits.txt, you can track habits for a specific period of time. When you want to stop tracking a habit, you can just stop tracking it.

Frequency

A habit is defined by a frequency, else it's called a task. The minimum frequency supported by habits.txt is daily (it doesn't support intra-day habits).

Boolean or Measurable

A habit can be boolean or measurable. A boolean habit is either done or not done. A measurable habit has a value.

Format

Habits are tracked in what I call a "journal" which is just a plain text file. A journal contains "directives".

A directive is composed of a date, a directive type, a habit name, and other metadata specific to the directive type. For example, here is a sample directive:

2024-01-01 track "Read 5 pages a day" (* * *)

You can comment lines in your journal by starting them with a # character. You can't add comments at the end of a line.

# Start tracking a habit
2024-01-01 track "Read 5 pages a day" (* * *)

Directives

track

To start tracking a habit, you use the track directive and specify the frequency of the habit enclosed in parentheses. Optionally, you can make the habit measurable by specifying the "measurable" keyword.

The frequency follows a simplified cron syntax, omitting the minute and the hour.

Example:

2024-01-01 track "Read 5 pages a day" (* * *)
2024-01-01 track "Exercise" (* * 1,3,5) measurable

untrack

To stop tracking a habit, you use the untrack directive.

Example:

2024-02-01 untrack "Read 5 pages a day"

record

To record a habit, you use the record directive and specify a value.

The allowed values are yes, no, or a number. You should not mix boolean and numeric values for the same habit.

You can write directives but omit the directive type, it will default to record.

Example:

2024-01-01 record "Read 5 pages a day" 5
2024-01-01 record "Workout" yes
2024-01-01 "Weight" 70.5