10-17-2017
Ohhh I see why it's matching to Annetta now .. thanks Aia!
Quote:
A . (period) will match any character except a new line by default when used as a regex.
The variable $freq will contain the expression 0.120 A character zero, followed by any character except a new line, followed by the character one, followed by the character two, followed by character zero.
I'm not sure I understand ... If I specify a regular expression in the frequency variable, will the script still work if I searched for a name with a different frequency number? Like say if I searched Annetta which has 0.006.. shouldn't I give the script freedom so it can find other names with a frequency of 0.006?
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LEARN ABOUT OPENSOLARIS
regex.h
regex.h(3HEAD) Headers regex.h(3HEAD)
NAME
regex.h, regex - regular expression matching types
SYNOPSIS
#include <regex.h>
DESCRIPTION
The <regex.h> header defines the structures and symbolic constants used by the regcomp(), regexec(), regerror(), and regfree() functions.
See regcomp(3C).
The structure type regex_t contains the following member:
size_t re_nsub number of parenthesized subexpressions
The type size_t is defined as described in <sys/types.h>. See types.h(3HEAD).
The type regoff_t is defined as a signed integer type that can hold the largest value that can be stored in either a type off_t or type
ssize_t. The structure type regmatch_t contains the following members:
regoff_t rm_so byte offset from start of string to start
of substring
regoff_t rm_eo byte offset from start of string of the
first character after the end of substring
Values for the cflags parameter to the regcomp function are as follows:
REG_EXTENDED use extended regular expressions
REG_ICASE ignore case in match
REG_NOSUB report only success or fail in regexec()
REG_NEWLINE change the handling of NEWLINE character
Values for the eflags parameter to the regexec() function are as follows:
REG_NOTBOL The circumflex character (^), when taken as a special character, does not match the beginning of string.
REG_NOTEOL The dollar sign ($), when taken as a special character, does not match the end of string.
The following constants are defined as error return values:
REG_NOMATCH regexec() failed to match.
REG_BADPAT Invalid regular expression.
REG_ECOLLATE Invalid collating element referenced.
REG_ECTYPE Invalid character class type referenced.
REG_EESCAPE Trailing '' in pattern.
REG_ESUBREG Number in fIdigit invalid or in error.
REG_EBRACK "[]" imbalance.
REG_EPAREN "()" or "()" imbalance.
REG_EBRACE "" imbalance.
REG_BADBR Content of "" invalid: not a number, number too large, more than two numbers, first larger than second.
REG_ERANGE Invalid endpoint in range expression.
REG_ESPACE Out of memory.
REG_BADRPT '?', '*', or '+' not preceded by valid regular expression.
REG_ENOSYS Reserved.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO
regcomp(3C), types.h(3HEAD), attributes(5), standards(5)
SunOS 5.11 9 Sep 2004 regex.h(3HEAD)