Bttf is a command line datetime Swiss army knife
github.com
May 28, 2026
7 min read
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56/100
Summary
bttf is a command line tool for datetime arithmetic, parsing, formatting, and more. It is dual-licensed under MIT or the UNLICENSE and provides a user guide for understanding its features and functionalities.
Key Takeaways
- bttf is a command line tool for datetime arithmetic, parsing, and formatting, available under MIT or UNLICENSE.
- Users can print the current time, format it in various styles, and perform datetime calculations such as adding durations or finding relative times.
- bttf allows for timezone conversions and can round times to specific increments, such as 15 minutes.
- The tool can generate sequences of dates based on specific criteria, such as weekdays or monthly occurrences.
Community Sentiment
Positives
- Bttf offers a unique solution for datetime manipulation on the command line, showcasing its versatility in handling complex use cases.
- The author shared a compelling example of Bttf's capabilities, highlighting its potential to simplify tasks that are otherwise cumbersome.
- Community members appreciate the tool's functionality, with comments expressing excitement about its practical applications in daily workflows.
- The tool's design encourages exploration of command line possibilities, helping users enhance their proficiency and productivity.
Concerns
- There are concerns about the default locale settings not being user-friendly, which could hinder accessibility for some users.
- Some users expressed frustration with the name collision between Bttf and the traditional 'biff' command, which could lead to confusion.