Google Message Security for Google Apps Administration Gu Bedienungsanleitung PDF herunterladen (Seite 220)

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220 Message Security for Google Apps Administration Guide

Character Description

Anchors

^ (caret) Matches the start of the line or string of text that the

regular expression is searching. For example, a content rule

with a location Subject line and the following regular

expression:

^abc

captures any email message that has a subject line beginning

with the letters abc.

$ (dollar) Matches the end of the line or string of text that the

regular expression is searching. For example, a content rule

with a location Subject line and the following regular

expression:

xyz$

captures any email message that has a subject line ending with

the letters xyz.

Metacharacters

. (dot) Matches any single character, except a new line.

| (pipe) Indicates alternation—that is, an “or.” For example:

cat|dog

matches the word cat or dog

\ Indicates that the next character is a literal rather than a special

character. For example:

matches a literal period, rather than any character (dot

character)

Character Classes

[...] Matches any character from a set of characters. Separate the

first and last character in a set with a dash. For example:

[123]

matches the digit 1, 2, or 3

[a-f]

matches any letter from a to f

Note: Regular expressions in Content Manager are not case

sensitive. Therefore, using this formatting to specify a character

set in lowercase letters also includes the equivalent uppercase

letters.

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