_Fork(3)

💖 _Fork(3) — the Library Functions Manual edition ✨

okay bestie, sit down, hydrate, and let's talk about _Fork 🫶 this is a page from the Library Functions Manual, and it is lowkey iconic for how short and drama-free it is. no cap.

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🌸 NAME 🌸

_Fork — create a child process 👶✨

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📚 LIBRARY 📚

Standard C library — that's libc, link it with -lc 💅

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🎀 SYNOPSIS 🎀

#include <unistd.h>

pid_t _Fork(void);

that's it. that's the whole vibe. one header, one function, one return type. minimalist queen 👑

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🦋 DESCRIPTION 🦋

so here's the tea ☕: this function is equivalent to fork(2), except for one lil but very important detail — the fork handlers you registered with pthread_atfork(3) are not called. like, at all. not even a little bit. 💀

that's the whole difference. everything else? same energy as fork(2). same behavior, same deal — just without the atfork handlers doing their little pre/post-fork dance. 🙈

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⭐ STANDARDS ⭐

POSIX.1-2024 — yeah she's certified, certified recent too 🌈

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🧚 HISTORY 🧚

POSIX.1-2024. born in the same era she was standardized in, periodt. 💜

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👀 SEE ALSO 👀

• fork(2)
• vfork(2)

go read those too, they're the siblings fr fr 🍓

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a gentle reminder for my besties: when a manpage says "equivalent to X except…" the except is the whole entire plot. don't skim it. 💅

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and that's the page!! brought to you by Linux man-pages 6.20, dated 2025-10-29 — mwah, love that for us, stay slay, go fork responsibly 😭💖🌸