{
  "id": 19599430,
  "title": "I built a small Unix-style shell in C that helps to understand more than just how to execute commands.",
  "url": "https://urgent.news/2026/11/12/i-built-a-small-unix-style-shell-in-c-that-helps-to-understand-more",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-11-12T04:33:52.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/punith_k_1a571ea8f828fb1e/i-built-a-small-unix-style-shell-in-c-that-helps-to-understand-more-than-just-how-to-execute-fhf"
  },
  "original_language": "en",
  "account": "P-Shell is a shell written in C that goes beyond merely executing commands to provide insight into the underlying process. While developing this project, the author gained a deeper understanding of how Unix processes operate. Some of the key features implemented include:\n\n- Command execution through fork() and execvp()\n- Pipes and output redirection using the redirection operators ( >, < )\n- Manipulation of file descriptors using dup2()\n- An :explain mode that traces the steps taken by the shell during operation\n- The ability to view processes through the /proc filesystem\n- Creation and inspection of real zombie processes, followed by reaping them using waitpid()\n\nThe primary goal of P-Shell is to offer a transparent view into what happens during command execution, rather than allowing the shell to be treated as a black box. The author emphasizes that this project has been an excellent way to gain hands-on experience with C programming, Linux processes, and fundamental operating-system concepts. Despite still being a work in progress, the author plans to continue enhancing P-Shell. Interested readers are encouraged to visit the project on GitHub at https://github.com/punithk-verse/p-shell and provide feedback. If the project piques your interest in C, Linux, or systems programming, consider leaving a ⭐️ rating on GitHub.",
  "summary": "If u wanted to understand more than just how to execute commands.? Here it is ... (pshell) Introducing P-Shell: A shell that shows its work. While building it, I explored how Unix processes actually work under the hood. Some of the things I've implemented: Command execution using \"fork()\" and \"execvp()\" Pipes and output redirection (\">\", \">>\") File descriptor manipulation using \"dup2()\" An…",
  "key_points": [],
  "editors_take": "By prioritizing transparency over simple execution, this project transforms the shell from an opaque tool into an educational instrument for mastering the complexities of Unix process management.",
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}