Originální popis anglicky: 
fnmatch - match filename or pathname
Návod, kniha: Linux Programmer's Manual
#include <fnmatch.h>
 
int fnmatch(const char *pattern, const char *string, int flags);
The 
fnmatch() function checks whether the 
string argument matches
  the 
pattern argument, which is a shell wildcard pattern.
The 
flags argument modifies the behaviour; 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, for example, with a [] - sequence
      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 only implemented in certain cases.
 
  - FNM_CASEFOLD
 
  - If this flag (a GNU extension) is set, the pattern is
      matched case-insensitively.
 
Zero if 
string matches 
pattern, 
FNM_NOMATCH if there is no
  match or another non-zero value if there is an error.
ISO/IEC 9945-2: 1993 (POSIX.2). The 
FNM_FILE_NAME,
  
FNM_LEADING_DIR, and 
FNM_CASEFOLD flags are GNU extensions.
sh(1), 
glob(3), 
scandir(3), 
glob(7)