---
title: "Discussion on \"File Descriptors (FD): What They Are, How They Work, and Why You Hit EMFILE\" | Hashnode"
description: "Discussion on \"File Descriptors (FD): What They Are, How They Work, and Why You Hit EMFILE\". If you’ve ever seen an error like:\nEMFILE: too many open files\n\nyou’ve already met one of the most fundamental pieces of an operating system: the file descriptor (FD).\nThis blog explains:\n\nwhat an FD"
url: "https://hashnode.com/posts/file-descriptors-fd-what-they-are-how-they-work-and-why-you-hit-emfile/69ea51ce904b9154389bb509"
---

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# [File Descriptors (FD): What They Are, How They Work, and Why You Hit EMFILE](https://blog.nishikanta.in/file-descriptors-fd-what-they-are-how-they-work-and-why-you-hit-emfile?utm_source=hashnode&utm_medium=feed)

If you’ve ever seen an error like: EMFILE: too many open files you’ve already met one of the most fundamental pieces of an operating system: the file descriptor (FD). This blog explains: what an FD

Apr 23 · 6 min read · blog.nishikanta.in  
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## Written by

[Nishikanta Ray](https://hashnode.com/@nishikanta236)

@nishikanta236 · India

  
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Fullstack Developer

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