Wednesday, September 30, 2026
Tuesday, September 29, 2026
New top story on Hacker News: Show HN: Corral – Kill every command your agent starts
Show HN: Corral – Kill every command your agent starts
10 by CG144 | 1 comments on Hacker News.
This summer I got to intern on the backend of an AI agent and I noticed that it would run commands like tail -f or some random background jobs and exit without terminating any of these. I got curious and looked up how Claude Code handles stuff like this, and it turns out they have similar problems. There are issues about background processes from the Bash tool not getting cleaned up when the session ends, and one where a timeout sends SIGTERM to the whole process group and ends up killing Claude Code itself. Most runners only kill the process they started, so anything that double forks, runs in the background, or keeps stdout open either survives or makes the runner hang. Corral was me attempting to make a fix for this problem, while also trying to learn about processes and signals in Linux. You run corral --wall 30s -- yourcommand and by the time it's done, nothing it started should be running. The command gets its own session so killing it can't kill you, and there's a mode where it runs in its own cgroup so the whole tree gets killed at once, including processes that may have changed sessions or process groups. If there's no cgroup available it tracks the tree through /proc instead (this is a bit weaker, it still catches processes that changed sessions once their parent dies, but it can't kill anything running as a different user or anything handed off to another service like systemd), and if it can't confirm everything is dead it exits with 120. Would love any feedback and more stuff along these lines i can do to learn more
10 by CG144 | 1 comments on Hacker News.
This summer I got to intern on the backend of an AI agent and I noticed that it would run commands like tail -f or some random background jobs and exit without terminating any of these. I got curious and looked up how Claude Code handles stuff like this, and it turns out they have similar problems. There are issues about background processes from the Bash tool not getting cleaned up when the session ends, and one where a timeout sends SIGTERM to the whole process group and ends up killing Claude Code itself. Most runners only kill the process they started, so anything that double forks, runs in the background, or keeps stdout open either survives or makes the runner hang. Corral was me attempting to make a fix for this problem, while also trying to learn about processes and signals in Linux. You run corral --wall 30s -- yourcommand and by the time it's done, nothing it started should be running. The command gets its own session so killing it can't kill you, and there's a mode where it runs in its own cgroup so the whole tree gets killed at once, including processes that may have changed sessions or process groups. If there's no cgroup available it tracks the tree through /proc instead (this is a bit weaker, it still catches processes that changed sessions once their parent dies, but it can't kill anything running as a different user or anything handed off to another service like systemd), and if it can't confirm everything is dead it exits with 120. Would love any feedback and more stuff along these lines i can do to learn more
Monday, September 28, 2026
Sunday, September 27, 2026
Saturday, September 26, 2026
Friday, September 25, 2026
Thursday, September 24, 2026
Wednesday, September 23, 2026
एक्सप्लेनर: उत्तर प्रदेश के चार हिस्से हुए तो कहां होंगे आप, राजभर से पहले कौन-कौन कर चुका बंटवारे की मांग?
एक्सप्लेनर: उत्तर प्रदेश के चार हिस्से हुए तो कहां होंगे आप, राजभर से पहले कौन-कौन कर चुका बंटवारे की मांग? Explainer: If UP Is Split into Four States, Where Would You Be? Who Had Demanded the Division Before Rajbhar?
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Tuesday, September 22, 2026
Monday, September 21, 2026
Sunday, September 20, 2026
Saturday, September 19, 2026
चार पाकिस्तानी जेट्स से अकेले भिड़े: गोलियां खत्म फिर भी नहीं हटे, अल्फ्रेड कुक का आखिरी संदेश
चार पाकिस्तानी जेट्स से अकेले भिड़े: गोलियां खत्म फिर भी नहीं हटे, अल्फ्रेड कुक का आखिरी संदेश
Alfred Cook Faced Four Pakistani Sabre Jets Alone During 1965 War
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Friday, September 18, 2026
Thursday, September 17, 2026
Wednesday, September 16, 2026
Tuesday, September 15, 2026
Monday, September 14, 2026
Sunday, September 13, 2026
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Friday, September 11, 2026
Thursday, September 10, 2026
बांग्लादेश को हराकर महिला एशिया कप 2026 के फाइनल में पहुंची भारत की टीम
महिला एशिया कप में टीम इंडिया ने एक बार फिर अपना दबदबा साबित कर दिया है। सेमीफाइनल में भारत ने बांग्लादेश को 40 रन से हराकर फाइनल का टिकट पक्का कर लिया।
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Wednesday, September 9, 2026
Tuesday, September 8, 2026
New top story on Hacker News: Ask HN: 3.5 inch diskette read errors, would a period correct drive do better?
Ask HN: 3.5 inch diskette read errors, would a period correct drive do better?
6 by rietta | 5 comments on Hacker News.
My first attempt at restoring 1991 Learning Company Spellbound for DOS for my children is dubious. Despite being stored nowhere near magnetic sources, there are read errors on the 3.5 inch floppies and Linux could not mount them. ddrescue extracted data but I have not confirmed it works. The box also have 5.25 inch disks but I do not have a reader online at the moment, that is its own project. My technical question is this, the USB 3.5 inch drive I have is a "USB Portable Diskette Drive" that was Made in China but has no obvious sponsoring branding. If I take the time to bring back to life a more period correct system with an actual IDE floppy drive would it read the disks more accurately? My goal is to get more of this good DOS and early Windows educational software working for my children. This particular title is meaningful because I have the actual boxes and learned on it myself all those years ago. One option for hardware is my parent's Leading Edge WinPro 486. The case looks to be in good shape but I have not opened the case to see the condition of the capacitors yet. It has a natively mounted 3.5 and 5.25 inch drive.
6 by rietta | 5 comments on Hacker News.
My first attempt at restoring 1991 Learning Company Spellbound for DOS for my children is dubious. Despite being stored nowhere near magnetic sources, there are read errors on the 3.5 inch floppies and Linux could not mount them. ddrescue extracted data but I have not confirmed it works. The box also have 5.25 inch disks but I do not have a reader online at the moment, that is its own project. My technical question is this, the USB 3.5 inch drive I have is a "USB Portable Diskette Drive" that was Made in China but has no obvious sponsoring branding. If I take the time to bring back to life a more period correct system with an actual IDE floppy drive would it read the disks more accurately? My goal is to get more of this good DOS and early Windows educational software working for my children. This particular title is meaningful because I have the actual boxes and learned on it myself all those years ago. One option for hardware is my parent's Leading Edge WinPro 486. The case looks to be in good shape but I have not opened the case to see the condition of the capacitors yet. It has a natively mounted 3.5 and 5.25 inch drive.
Monday, September 7, 2026
Sunday, September 6, 2026
Saturday, September 5, 2026
Friday, September 4, 2026
Thursday, September 3, 2026
New top story on Hacker News: Show HN: I made a word building game supporting anagrams and one handed use
Show HN: I made a word building game supporting anagrams and one handed use
6 by busymom0 | 0 comments on Hacker News.
Hi everyone, Wanted to share a game I built. It's called Unscramble! and I believe it's the simplest word building game. Rules: You get a few letters on screen. You need to make one word with all the letters. Tap a letter to select. Tap again to deselect. Faster you go, better you score. If you enter anagrams of the word it's looking for, it gives you extra points. If you are stuck, you can either "Ask Friend" or get Hint. You get extra points for getting the word fast but you don't get penalized for taking too long. I believe the simplicity of the game along with big touch buttons makes it perfect for one handed use. There's 6 difficulty levels in the game, and settings for things like toggling the timer, relaxing background music, sound effects, haptic feedback, removing the background animation. If you want to try: https://ift.tt/U9HrVXs... Would love to hear feedback to improve it.
6 by busymom0 | 0 comments on Hacker News.
Hi everyone, Wanted to share a game I built. It's called Unscramble! and I believe it's the simplest word building game. Rules: You get a few letters on screen. You need to make one word with all the letters. Tap a letter to select. Tap again to deselect. Faster you go, better you score. If you enter anagrams of the word it's looking for, it gives you extra points. If you are stuck, you can either "Ask Friend" or get Hint. You get extra points for getting the word fast but you don't get penalized for taking too long. I believe the simplicity of the game along with big touch buttons makes it perfect for one handed use. There's 6 difficulty levels in the game, and settings for things like toggling the timer, relaxing background music, sound effects, haptic feedback, removing the background animation. If you want to try: https://ift.tt/U9HrVXs... Would love to hear feedback to improve it.