CLIGuide
Build a Disk Usage Analyzer in Rust Like du and ncdu
du walks a tree and adds up file sizes. The interesting decisions are hard links counted once, symlinks left alone and how to keep going when a directory is unreadable.
16 min read
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project
10 posts
CLIGuide
Build a Fuzzy Finder in Rust With Crossterm and Nucleo
A fuzzy finder reads lines, filters them as you type and prints the one you pick. The pieces are raw mode input, a matching engine and a small redraw loop.
21 min read
CLIGuide
Build a Markdown to HTML Converter CLI in Rust With Pulldown
pulldown-cmark turns Markdown into a stream of events, and its HTML writer renders them. A small CLI adds file handling, options and a page template around it.
20 min read
CLIGuide
Build a jq Style JSON Query Tool in Rust Step by Step
A jq clone needs three parts: a parser for a small path language, an evaluator over serde_json values and a printer. The core is about 150 lines.
16 min read
CLIGuide
Build a Log Analyzer in Rust With Regex and Iterators
A log analyzer is a streaming pipeline: read lines, parse with a regex, fold into counters and print the top entries. Iterators keep memory flat on gigabyte files.
16 min read
CLIGuide
Build a Git Hook Manager in Rust From Scratch Step by Step
Build a git hook manager in Rust: read a hooks config, install shims into .git/hooks, run commands on staged files in order, and report results with proper exit codes.
16 min read
CLIGuide
Build a Todo CLI in Rust With Serde and a JSON File
Build a todo list CLI in Rust with clap subcommands, serde JSON storage, stable ids, atomic and durable saves, and a file lock that stops concurrent runs from losing items. Every claim measured.
17 min read
CLIGuide
Build a Markdown Link Checker in Rust With Reqwest
Build a Markdown link checker in Rust: extract links with pulldown-cmark, check them concurrently with reqwest and a semaphore, retry, report and set exit codes.
18 min read
CLIGuide
Build a Fast File Finder in Rust With Parallel Walking
Build a fast file finder in Rust: parallel directory walking with the ignore crate, glob and regex filters, size and type predicates, and sorted deterministic output.
16 min read
CLIGuide
Build a Grep Clone in Rust and Learn File Handling
Build a grep clone in Rust from a naive version that panics on Latin-1 text to a streaming one that searches 72 MB in 77 ms with 2.5 MB of memory, handling binary files, exit codes and broken pipes.
20 min read