HP 10500 Series Configuration Manual page 19

Characters Meaning
Matches the preceding strings in
\N parentheses, with the Nth string
repeated once.
Matches a single character in the
[ ]
brackets.
Matches a single character that is not
[^]
in the brackets.
Matches the preceding character n
{n} times. The number n must be a
nonnegative integer.
Matches the preceding character n
{n,} times or more. The number n must be a
nonnegative integer.
Matches the preceding character n to
m times or more. The numbers n and m
{n,m}
must be nonnegative integers and n
cannot be greater than m.
Matches a string that starts with the
pattern following \<. A string that
\< contains the pattern is also a match if
the characters preceding the pattern
are not digits, letters, or underscores.
Matches a string that ends with the
pattern preceding \>. A string that
\> contains the pattern is also a match if
the characters following the pattern
are not digits, letters, or underscores.
Matches a word that starts with the
\b pattern following \b or ends with the
pattern preceding \b.
Matches a word that contains the
\B pattern but does not start or end with
the pattern.
Same as [A-Za-z0-9_], matches a digit,
\w
letter, or underscore.
Same as [^A-Za-z0-9_], matches a
\W character that is not a digit, letter, or
underscore.
Examples
"(string)\1" matches a string containing
"stringstring".
"(string1)(string2)\2" matches a string containing
"string1string2string2".
"(string1)(string2)\1\2" matches a string
containing " string1string2string1string2".
"[16A]" matches a string containing 1, 6, or A;
"[1-36A]" matches a string containing 1, 2, 3, 6,
or A (- is a hyphen).
To match the character "]", put it immediately after
"[", for example, []abc]. There is no such limit on
"[".
"[^16A]" matches a string that contains at least
one character other than 1, 6, or A, such as "abc".
A match can also contain 1, 6, or A (such as
"m16"), but it cannot contain these three
characters only (such as 1, 16, or 16A).
"o{2}" matches "food", but not "Bob".
"o{2,}" matches "foooood", but not "Bob".
" o{1,3}" matches "fod", "food", and "foooood",
but not "fd".
"\<do" matches "domain" and "doa".
"do\>" matches "undo" and "cdo".
"er\b" matches "never", but not "verb" or "erase".
"\ber" matches "erase", but not "verb" or "never".
"er\B" matches "verb", but not "never" or "erase".
"v\w" matches "vlan" and "service".
"\Wa" matches "-a", but not "2a" or "ba".
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