redhat man page for re_comp

re_comp(3)								GNU								re_comp(3)

NAME
       re_comp, re_exec - BSD regex functions

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

       char *re_comp(char *regex);
       int re_exec(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.

CONFORMING TO
       BSD 4.3

SEE ALSO
       regex(7), GNU regex manual

Linux								    1995-07-14								re_comp(3)