Show HN: ut – Rust based CLI utilities for devs and IT

ut A fast, lightweight CLI utility toolkit for developers and IT professionals. ut provides a comprehensive set of commonly-used tools in a single binary, eliminating the need to install and remember multiple utilities or search for random websites to perform simple tasks. Installation cargo install --git https://github.com/ksdme/ut.git Usage ut < TOOL > [OPTIONS] Run ut --help to see all available tools, or ut --help for specific tool documentation. Available Tools ├── Encoding │ ├── base64 - Base64 encode/decode │ │ ├── encode │ │ └── decode │ └── url - URL encode/decode │ ├── encode │ └── decode ├── Hashing │ └── hash - Cryptographic hash digests │ ├── md5 │ ├── sha1 │ ├── sha224 │ ├── sha256 │ ├── sha384 │ └── sha512 ├── Data Generation │ ├── uuid - Generate UUIDs │ │ ├── v1 │ │ ├── v3 │ │ ├── v4 │ │ ├── v5 │ │ └── v7 │ ├── token - Generate secure random tokens │ ├── lorem - Generate lorem ipsum text │ └── random - Generate random numbers ├── Text Processing │ ├── case - Convert text case formats │ │ ├── lower │ │ ├── upper │ │ ├── camel │ │ ├── title │ │ ├── constant │ │ ├── header │ │ ├── sentence │ │ └── snake │ ├── pretty-print - Unescape newlines and tabs │ └── diff - Compare text with visual output ├── Development Tools │ ├── calc - Expression calculator │ ├── json - JSON builder and utilities │ │ └── builder │ ├── regex - Interactive regex tester │ └── datetime - Parse and convert datetimes ├── Web & Network │ ├── http - HTTP utilities │ │ └── status │ ├── serve - Local HTTP file server │ └── qr - Generate QR codes ├── Color & Design │ └── color - Color utilities │ └── convert └── Reference └── unicode - Unicode symbol reference Encoding base64 Encode and decode data using Base64 encoding. Supports both standard and URL-safe character sets Can read from files or stdin ut base64 encode " hello world " ut base64 decode " aGVsbG8gd29ybGQ= " ut base64 encode --urlsafe " hello world " url URL encode and decode text. ut url encode " hello world " ut url decode " hello%20world " Hashing hash Generate cryptographic hash digests using various algorithms. Supports MD5, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 Can read from files or stdin ut hash sha256 " hello world " ut hash md5 - < file.txt Data Generation uuid Generate UUIDs in various versions. v1: Timestamp-based v3: Namespace + MD5 hash v4: Random v5: Namespace + SHA-1 hash v7: Timestamp-based, sortable ut uuid v4 ut uuid v4 --count 5 ut uuid v5 --namespace DNS --name example.com ut uuid v7 ut uuid v7 --count 5 token Generate cryptographically secure random tokens. Customizable length and character sets Uses OS-level secure randomness ut token --length 32 ut token --no-symbols --length 64 lorem Generate lorem ipsum placeholder text. Customizable paragraph count and sentence structure ut lorem --paragraphs 5 ut lorem --min-sentences 2 --max-sentences 6 random Generate random numbers within a specified range. Supports decimal precision with step parameter Can generate multiple values at once ut random --min 1 --max 100 ut random --min 0 --max 1 --step 0.01 --count 10 Text Processing case Convert text between different case formats. lowercase, UPPERCASE, camelCase, snake_case, Title Case, CONSTANT_CASE, Header-Case, Sentence case ut case lower " Hello World " ut case camel " hello_world " ut case snake " HelloWorld " Resolve escaped newlines and tab characters in text. ut pretty-print " hello world\ttab " diff Compare text contents with visual diff output. Supports file comparison or interactive editing Color-coded character-level differences ut diff -a file1.txt -b file2.txt ut diff # Opens editor for both inputs Development Tools calc Expression calculator with support for multiple number formats and mathematical functions. Supports arithmetic operations, exponentiation, functions (sin, cos, tan, log, exp, sqrt, abs, floor, ceil, round) Binary (0b), hexadecimal (0x), and decimal number formats Mathematical constants (pi, e) Results displayed in decimal, hex, and binary ut calc " 2 + 2 * 3 " ut calc " sin(pi / 2) " ut calc " 0xFF + 0b1010 " ut calc " sqrt(16) ^ 2 " json JSON utilities including a powerful JSON builder. Build complex JSON structures using dot notation Supports nested objects and arrays Array indexing and append operations ut json builder a.b.c=hello a.b.d=world ut json builder " user.name=John " " user.age=30 " " user.tags[]=dev " " user.tags[]=rust " ut json builder " items[0].id=1 " " items[0].name=first " " items[1].id=2 " regex Interactive regex tester with live highlighting. Real-time pattern matching visualization Multi-color highlighting for capture groups Load test strings from files ut regex ut regex --test sample.txt datetime Parse and convert datetimes between timezones. Support for ISO 8601 and custom format strings Convert between timezones "now" keyword for current time ut datetime now ut datetime " 2025-10-04T15:30:00Z " --target-timezone " Asia/Tokyo " ut datetime " October 04, 2025 03:30 PM " --source-timezone UTC --parse-format " MonthName Day2, Year4 Hour12:Minute2 AMPM " Web & Network http HTTP utilities including status code lookup. ut http status 404 ut http status # List all status codes serve Start a local HTTP file server. Customizable host and port Directory listing support Optional HTTP Basic authentication ut serve --port 8080 ut serve --directory ./public --auth username:password qr Generate QR codes. Terminal display or save to PNG file ut qr " https://example.com " ut qr " Hello World " --output qrcode.png Color & Design color Color utilities for working with different color formats. Supports hex, rgb, rgba, hsl, hwb, lab, lch, oklab, oklch Parses any CSS-compatible color format ut color convert " #FF5733 " ut color convert " rgb(255, 87, 51) " ut color convert " hsl(9, 100%, 60%) " Reference unicode Display Unicode symbol reference table. ut unicode Features Fast : Built in Rust for optimal performance : Built in Rust for optimal performance Standalone : Single binary with no runtime dependencies : Single binary with no runtime dependencies Composable : Tools work with stdin/stdout for easy piping : Tools work with stdin/stdout for easy piping Secure : Uses cryptographically secure random number generators where appropriate : Uses cryptographically secure random number generators where appropriate Cross-platform: Works on Linux, macOS, and Windows Development # Run the project cargo run -- < tool > [args] # Format code cargo fmt # Run tests cargo test Built with Claude Code Parts of this project were built using Claude Code, an AI-powered coding assistant, with human oversight and collaboration. Contributing Contributions are welcome! Please feel free to submit a Pull Request.