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Asked: 2026-05-17T20:49:37+00:00

I compile my simple prog with #include <sys/socket.h> but there’s none of this file.

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I compile my simple prog with #include <sys/socket.h> but there’s none of this file.
Where is it, I just start coding in linux and I have no idea where is it . Or do we need to download it online .

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1 Answer

  1. Editorial Team

    In case you have installed manual pages, the first stop should be man socket.

    Without manual pages you could call

    find /usr/include -name socket.h

    which outputs

    /usr/include/asm/socket.h
/usr/include/sys/socket.h
/usr/include/bits/socket.h
/usr/include/linux/socket.h

    on my system, the one to include is sys/socket.h .

    Also see the Single UNIX Specification.

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