Rucat – Cat for Prompt Engineers

Hacker News

Aloha HN - I'm redbeard, ex-CoreOS homey, RISC-V guy, and general free software wingnut. Like many of us, I've increasingly found myself using AI for my work. One of the challenges for me is that I prefer to stay on the command line and I'm often working on remote machines over SSH. This often means moving off of the keyboard to use the mouse or a complex chording of characters to capture output from the buffer. Capturing a single file isn't too challenging on a localhost (`cat | wl-copy` /`cat | pbcopy`, etc) but this is still really focused on single files. If you're capturing multiple files, the content (of course) gets catenated together. "There's got to be a better way!" After realizing the many terminals support ANSI control code OSC 52 and my preferred terminal, Kitty, supports OSC 5522 I put together "rucat", a cat inspired tool for capturing multiple files with additional semantic data. Rucat excels at capturing multiple files quickly and without worrying about serialization loss. It's been written in Rust to intentionally avoid a number of memory safety and string parsing issues as well as providing a path to cross platform support. The tool is currently available in binary and source form in the repository. Feedback is welcomed!

Visit product View on Hacker NewsAug 19, 2025

Share card

Actual performance

10points

1comments

Made the leaderboard

Launch Intel predictions

Analyze your own launch →

Product HuntOn track for Day 1 leaderboard · Strong signals: mac, single, using · Missing: agents, macos, agent

84%84% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

best fitHighest predicted score across all platforms for this description.

Indie HackersFits the IH revenue-focused audience · Strong signals: supports · Missing: reddit linkedin, podcasting, created

72%72% predicted probability of success on Indie Hackers, based on ML models trained on real launch data.

TrustMRRFits verified-revenue profile · Strong signals: way · Missing: mobile apps, ios, personal

63%63% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

Hacker NewsStrong engagement from HN community · Strong signals: io · Missing: https docs, excited, just released

54%54% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

AppSumoMay struggle as an AppSumo deal · Strong signals: platform, host · Missing: plus, intuitive, reviews

34%34% predicted probability of success on AppSumo, based on ML models trained on real launch data.

Acquire.comPre-revenue stage for this audience · Missing: arr, mrr, revenue

11%11% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Missing: web3, chat, crypto

0%0% predicted probability of success on BetaList, based on ML models trained on real launch data.

Correct prediction on native model

Similar products

Nyan cat with processingjs19%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Nyan cat with processingjs

Hacker News2

cat HN, in Go24%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

cat HN, in Go

Hacker News1

Amit Raina8%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Your cat, decoded.

Indie Hackerscommitment-full-time

put a text nyan cat in your emacs37%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

put a text nyan cat in your emacs

Hacker News2

The Cat API26%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

The Cat API

Hacker News1

Daily Cat43%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Daily Cat

Hacker News3

Cat Spraying No More.11%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Stop your cat from urinating and pooing allover your house.

Indie Hackerscommitment-full-time

One Cat a Day25%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

One Cat a Day

Hacker News1

Litterboxd32%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Track every cat encounter & build your personal cat journal

Indie Hackers1community

Underthreaded – The Brand for Engineers58%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Underthreaded – The Brand for Engineers

Hacker News3

Browse all products Analyze your launch