POSIX regex functions NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -...POSIX regex functions NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -...POSIX regex functions NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -...POSIX regex functions NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -...POSIX regex functions NAME regcomp, regexec, regerror, regfree - POSIX regex functions LIBRARY Standard C library ( libc , -......STANDARDS None. HISTORY 4.3BSD. These functions are obsolete; the functions documented in regcomp (3) should be used instead. SEE ALSO regcomp (3), regex (7), GNU regex manual...STANDARDS None. HISTORY 4.3BSD. These functions are obsolete; the functions documented in regcomp (3) should be used instead. SEE ALSO regcomp (3), regex (7), GNU regex manual...only test if the return value is nonzero. rpmatch () can fail for any of the reasons that regcomp (3) or regexec (3) can fail; the cause of the error is not available from errno…...- _SC_RE_DUP_MAX The number of repeated occurrences of a BRE permitted by regexec (3) and regcomp (3). Must not be less than _POSIX2_RE_DUP_MAX (255). STREAM_MAX - _SC_STREAM_MA…