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  10 .TH FNMATCH 3C "Jul 24, 2002"
  11 .SH NAME
  12 fnmatch \- match filename or path name
  14 .LP
  15 .nf
  16 #include <fnmatch.h>
  18 \fBint\fR \fBfnmatch\fR(\fBconst char *\fR\fIpattern\fR, \fBconst char *\fR\fIstring\fR, \fBint\fR \fIflags\fR);
  19 .fi
  22 .sp
  23 .LP
  24 The \fBfnmatch()\fR function matches patterns as described on the
  25 \fBfnmatch\fR(5) manual page.  It checks the \fIstring\fR argument to see if it
  26 matches the \fIpattern\fR argument.
  27 .sp
  28 .LP
  29 The \fIflags\fR argument modifies the interpretation of \fIpattern\fR and
  30 \fIstring\fR. It is the bitwise inclusive \fBOR\fR of zero or more of the
  31 following flags defined in the header <\fBfnmatch.h\fR>.
  32 .sp
  33 .ne 2
  34 .na
  35 \fB\fBFNM_PATHNAME\fR  \fR
  36 .ad
  37 .RS 18n
  38 If set, a slash (\fB/\fR) character in \fIstring\fR will be explicitly matched
  39 by a slash in \fIpattern\fR; it will not be matched by either the asterisk
  40 (\fB*\fR) or question-mark (\fB?\fR) special characters, nor by a bracket
  41 (\fB[\|]\fR) expression.
  42 .sp
  43 If not set, the slash character is treated as an ordinary character.
  44 .RE
  46 .sp
  47 .ne 2
  48 .na
  50 .ad
  51 .RS 18n
  52 If not set, a backslash character (\fB\e\fR) in \fIpattern\fR followed by any
  53 other character will match that second character in \fIstring\fR. In
  54 particular, "\fB\e\e\fR" will match a backslash in \fIstring\fR.
  55 .sp
  56 If set, a backslash character will be treated as an ordinary character.
  57 .RE
  59 .sp
  60 .ne 2
  61 .na
  62 \fB\fBFNM_PERIOD\fR\fR
  63 .ad
  64 .RS 18n
  65 If set, a leading period in \fIstring\fR will match a period in \fIpattern\fR;
  66 where the location of "leading" is indicated by the value of
  68 .RS +4
  69 .TP
  70 .ie t \(bu
  71 .el o
  72 If \fBFNM_PATHNAME\fR is set, a period is "leading" if it is the first
  73 character in \fIstring\fR or if it immediately follows a slash.
  74 .RE
  75 .RS +4
  76 .TP
  77 .ie t \(bu
  78 .el o
  79 If \fBFNM_PATHNAME\fR is not set, a period is "leading" only if it is the first
  80 character of \fIstring\fR.
  81 .RE
  82 .RE
  84 .sp
  85 .LP
  86 If not set, no special restrictions are placed on matching a period.
  88 .sp
  89 .LP
  90 If \fIstring\fR matches the pattern specified by \fIpattern\fR, then
  91 \fBfnmatch()\fR returns \fB0\fR. If there is no match, \fBfnmatch()\fR returns
  92 \fBFNM_NOMATCH\fR, which is defined in the header <\fBfnmatch.h\fR>. If an
  93 error occurs, \fBfnmatch()\fR returns another non-zero value.
  94 .SH USAGE
  95 .sp
  96 .LP
  97 The \fBfnmatch()\fR function has two major uses. It could be used by an
  98 application or utility that needs to read a directory and apply a pattern
  99 against each entry. The \fBfind\fR(1) utility is an example of this. It can
 100 also be used by the \fBpax\fR(1) utility to process its \fIpattern\fR operands,
 101 or by applications that need to match strings in a similar manner.
 102 .sp
 103 .LP
 104 The name \fBfnmatch()\fR is intended to imply \fIfilename\fR match, rather than
 105 \fIpathname\fR match. The default action of this function is to match
 106 filenames, rather than path names, since it gives no special significance to
 107 the slash character. With the \fBFNM_PATHNAME\fR flag, \fBfnmatch()\fR does
 108 match path names, but without tilde expansion, parameter expansion, or special
 109 treatment for period at the beginning of a filename.
 110 .sp
 111 .LP
 112 The \fBfnmatch()\fR function can be used safely in multithreaded applications,
 113 as long as \fBsetlocale\fR(3C) is not being called to change the locale.
 115 .sp
 116 .LP
 117 See \fBattributes\fR(5) for descriptions of the following attributes:
 118 .sp
 120 .sp
 121 .TS
 122 box;
 123 c | c
 124 l | l .
 126 _
 127 CSI     Enabled
 128 _
 129 Interface Stability     Standard
 130 _
 131 MT-Level        MT-Safe with exceptions
 132 .TE
 135 .sp
 136 .LP
 137 \fBfind\fR(1), \fBpax\fR(1), \fBglob\fR(3C), \fBsetlocale\fR(3C),
 138 \fBwordexp\fR(3C), \fBattributes\fR(5), \fBfnmatch\fR(5), \fBstandards\fR(5)