RE_COMP(3)                 Linux Programmer's Manual                RE_COMP(3)



NAME
       re_comp, re_exec - BSD regex functions

SYNOPSIS
       #define _REGEX_RE_COMP
       #include <sys/types.h>
       #include <regex.h>

       char *re_comp(const char *regex);

       int re_exec(const char *string);

DESCRIPTION
       re_comp()  is  used  to  compile the null-terminated regular expression
       pointed to by regex.  The compiled pattern occupies a static area,  the
       pattern  buffer,  which  is overwritten by subsequent use of re_comp().
       If regex is NULL, no operation is performed and  the  pattern  buffer's
       contents are not altered.

       re_exec()  is used to assess whether the null-terminated string pointed
       to by string matches the previously compiled regex.

RETURN VALUE
       re_comp() returns NULL on successful compilation of regex otherwise  it
       returns a pointer to an appropriate error message.

       re_exec() returns 1 for a successful match, zero for failure.

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

       +---------------------+---------------+-----------+
       |Interface            | Attribute     | Value     |
       +---------------------+---------------+-----------+
       |re_comp(), re_exec() | Thread safety | MT-Unsafe |
       +---------------------+---------------+-----------+
CONFORMING TO
       4.3BSD.

NOTES
       These  functions  are  obsolete; the functions documented in regcomp(3)
       should be used instead.

SEE ALSO
       regcomp(3), regex(7), GNU regex manual

COLOPHON
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       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.



GNU                               2017-09-15                        RE_COMP(3)