NAME

       fnmatch - match filename or pathname

SYNOPSIS

       #include <fnmatch.h>

       int fnmatch(const char *pattern, const char *string, int flags);

DESCRIPTION

       The  fnmatch() function checks whether the string argument matches the pattern argument, which is a shell
       wildcard pattern.

       The flags argument modifies the behavior; it is the bitwise OR of zero or more of the following flags:

       FNM_NOESCAPE
              If this flag is set, treat backslash as an ordinary character, instead of an escape character.

       FNM_PATHNAME
              If this flag is set, match a slash in string only with a slash in pattern and not by  an  asterisk
              (*) or a question mark (?) metacharacter, nor by a bracket expression ([]) containing a slash.

       FNM_PERIOD
              If  this flag is set, a leading period in string has to be matched exactly by a period in pattern.
              A period is considered to be leading  if  it  is  the  first  character  in  string,  or  if  both
              FNM_PATHNAME is set and the period immediately follows a slash.

       FNM_FILE_NAME
              This is a GNU synonym for FNM_PATHNAME.

       FNM_LEADING_DIR
              If  this  flag  (a GNU extension) is set, the pattern is considered to be matched if it matches an
              initial segment of string which is followed by a slash.  This flag is mainly for the internal  use
              of glibc and is implemented only in certain cases.

       FNM_CASEFOLD
              If this flag (a GNU extension) is set, the pattern is matched case-insensitively.

       FNM_EXTMATCH
              If this flag (a GNU extension) is set, extended patterns are supported, as introduced by 'ksh' and
              now supported by other shells.  The extended format is as follows, with pattern-list being  a  '|'
              separated list of patterns.

       '?(pattern-list)'
              The  pattern  matches  if zero or one occurrences of any of the patterns in the pattern-list match
              the input string.

       '*(pattern-list)'
              The pattern matches if zero or more occurrences of any of the patterns in the  pattern-list  match
              the input string.

       '+(pattern-list)'
              The  pattern  matches  if one or more occurrences of any of the patterns in the pattern-list match
              the input string.

       '@(pattern-list)'
              The pattern matches if exactly one occurrence of any of the patterns in the pattern-list match the
              input string.

       '!(pattern-list)'
              The  pattern  matches  if  the  input  string  cannot  be  matched with any of the patterns in the
              pattern-list.

RETURN VALUE

       Zero if string matches pattern, FNM_NOMATCH if there is no match or another nonzero value if there is  an
       error.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       ┌──────────┬───────────────┬────────────────────┐
       │Interface │ Attribute     │ Value              │
       ├──────────┼───────────────┼────────────────────┤
       │fnmatch() │ Thread safety │ MT-Safe env locale │
       └──────────┴───────────────┴────────────────────┘

CONFORMING TO

       POSIX.1-2001,  POSIX.1-2008, POSIX.2.  The FNM_FILE_NAME, FNM_LEADING_DIR, and FNM_CASEFOLD flags are GNU
       extensions.

SEE ALSO

       sh(1), glob(3), scandir(3), wordexp(3), glob(7)

COLOPHON

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