explain_execvp_or_die(3)

✨ explain_execvp_or_die — Library Functions Manual ✨

okay bestie, so we're diving into explain_execvp_or_die(3) today and honestly? she's a baddie. let's get into it 💅

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🌸 NAME 🌸

explain_execvp_or_die — execute a file and report errors

like, she runs your file and if it goes wrong she tells you why. no mystery, no vibes-based debugging, just answers. queen behavior 👑

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🦋 SYNOPSIS 🦋

#include <libexplain/execvp.h>
void explain_execvp_or_die(const char *pathname, char *const *argv);

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💖 DESCRIPTION 💖

so here's the tea 🍓 — the explain_execvp_or_die function is what you call when you wanna hit up the execvp(3) system call. but here's the twist: if it fails, she prints an explanation straight to stderr (obtained from explain_execvp(3), her more chill cousin), and then the process terminates by calling exit(EXIT_FAILURE).

not me being dramatic, but yeah — on failure this function does not come back. she exits. the whole process. gone. periodt 💀

this function is meant to be used in a way that's similar to this iconic little example:

explain_execvp_or_die(pathname, argv);

let's break down the args bestie:

• pathname — the pathname, exactly as to be passed to the execvp(3) system call. don't get cute with it, pass it exactly 💅
• argv — the argv, exactly as to be passed to the execvp(3) system call. same energy, exact same thing, no edits 🌈

Returns:

okay so this one's important — this function only returns on success. like, that's the whole deal. on failure, it prints an explanation and exits. so if you're getting a return value back? congrats, it worked 🎀 if you don't get one back... you're not getting anything back, because the process is gone. iykyk 😭

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🎀 SEE ALSO 🎀

• execvp(3) — execute a file
• explain_execvp(3) — explain execvp(3) errors
• exit(2) — terminate the calling process

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👑 COPYRIGHT 👑

this whole thing is libexplain version 1.4, and Copyright (C) 2009 Peter Miller. respect the icon, she's been serving since 2009 fr fr 🫶

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and that's the page bestie!! explain_execvp_or_die(3) — out here executing files and explaining errors with main character energy since forever. go forth and let her cook 🔥💜