This article lays out POSIX Extended Regular Expression syntax implemented by ThousandEyes for page content verification in HTTP Server tests. For those wanting a more comprehensive article on this regular expression syntax, along with testing and troubleshooting guidelines, see this article.
Single-Character Expressions
Repeaters
{n}
previous expression matches exactly n times
{n,}
previous expression matches at least n times
{,m}
previous expression matches at most m times
{n,m}
previous expression matches between n and m times (inclusive)
*
previous expression matches 0 or more times
?
previous expression matches 0 or 1 times
+
previous expression matches 1 or more times
Patterns
(
start of pattern
)
end of pattern
Boundaries
^
beginning of line (only valid when used at the beginning of a pattern)
$
end of line (only valid when used at the end of a pattern)
