EVS IP2Archive Deep Archive Manager Version 3.0 - October 2012 User Manual User Manual

Page 101

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Metacharacter Syntax

Operator Name

Description

.

Any Character -- Dot

Matches any character.

+

One or More -- Plus
Quantifier

Matches one or more
occurrences of the
preceding subexpression.

?

Zero or One -- Question
Mark Quantifier

Matches zero or one
occurrence of the preceding
subexpression.

*

Zero or More -- Star
Quantifier

Matches zero or more
occurrences of the
preceding subexpression.

{m}

Interval--Exact Count

Matches exactly

m

occurrences of the
preceding subexpression.

{m,}

Interval--At Least Count

Matches at least m
occurrences of the
preceding subexpression.

{m,n}

Interval--Between Count

Matches at least m, but not
more than n occurrences of
the preceding
subexpression.

[ ... ]

Matching Character List

Matches any character in
list ...

[^ ... ]

Non-Matching Character
List

Matches any character not
in list ...

|

Or

'a|b' matches character 'a' or
'b'.

( ... )

Subexpression or Grouping

Treat expression ... as a
unit. The subexpression can
be a string of literals or a
complex expression
containing operators.

\n

Backreference

Matches the nth preceding
subexpression, where n is
an integer from 1 to 9.

94

6. Configuring the Application

EVS Broadcast Equipment S.A. - October 2012

Issue 3.0.D

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