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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | ATTRIBUTES | STANDARDS | SEE ALSO | COLOPHON |
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getopt_long_only(3) Library Functions Manual getopt_long_only(3)
getopt_long_only - parse long command-line options
Standard C library (libc, -lc)
#define _GNU_SOURCE
#include <getopt.h>
int getopt_long_only(int argc, char *argv[],
const char *optstring,
const struct option *longopts, int *longindex);
getopt_long_only() is like getopt_long(3), but '-' as well as "--"
can indicate a long option. If an option that starts with '-'
(not "--") doesn't match a long option, but does match a short
option, it is parsed as a short option instead.
For an explanation of the terms used in this section, see
attributes(7).
┌────────────────────┬───────────────┬───────────────────────────┐
│ Interface │ Attribute │ Value │
├────────────────────┼───────────────┼───────────────────────────┤
│ getopt_long_only() │ Thread safety │ MT-Unsafe race:getopt env │
└────────────────────┴───────────────┴───────────────────────────┘
GNU.
getopt(1), getopt(3), getopt_long(3), getsubopt(3)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
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2026-05-24. If you discover any rendering problems in this HTML
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Linux man-pages 6.18 2025-12-07 getopt_long_only(3)
Pages that refer to this page: getopt(3), getopt_long(3)
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HTML rendering created 2026-05-24 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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