SD – dynamic directory navigation utility

SD is a command-line directory navigation utility for ksh, Bash and Zsh.

It behaves like cd when given a valid pathname, while adding pattern-based navigation through a dynamically ranked directory stack. Unlike many directory jumpers that store only an aggregate score for each location, SD retains an explicit history of directory-change events. Rankings can therefore be recalculated when scoring parameters change without discarding that history. Its scoring model combines frequency and recency over a configurable trailing window, and repeated searches using the same pattern cycle predictably through matching directories in rank order. The repository is maintained as a read-only snapshot of stable project states.

This is free and open source software.

Key Features

• Records directory changes in a persistent logfile.
• Maintains in-memory history including visits not yet written to disk.
• Uses a configurable exponential aging kernel, with a power-law model available as an alternative.
• Uses event order rather than elapsed wall-clock time when calculating recency.
• Matches regular expressions against complete directory paths with smart-case handling.
• Falls back to lower-ranked candidates when a matching directory no longer exists.
• Can search retained history when ranked matches are stale.
• Provides a ds command for inspecting and managing the directory stack.
• Can use fzf for interactive selection between matching locations.
• Allows independent limits for retained history and the scoring window.
• Lets users adjust scoring parameters and stack limits while the shell is running.
• Provides facilities for cleaning stale entries and inspecting configuration.
• Uses logfile locking to coordinate concurrent shells.
• Detects naming conflicts with other commands called sd and leaves the existing command untouched.
• Preserves standard path handling for absolute and relative paths, parent directories and home-directory expansion.

Website: github.com/jghub/sd-switchdir
Support:
Developer: jghub
License: MIT License

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