3Com S7906E Configuration Manual page 2352

Character
\index
[^]
\<string
string\>
\bcharacter2
\Bcharacter
character1\w
\W
\
Multiple-screen output
When there is a lot of information to be output, the system displays the information in multiple screens.
Generally, 24 lines are displayed on one screen, and you can also use the screen-length command to
set the number of lines displayed on the next screen. (For the details of this command, refer to Login
Meaning
Repeats a specified character
group for once. A character
group refers to the string in ()
before \. index refers to the
sequence number (starting from
1 from left to right) of the
character group before \: if only
one character group appears
before \, then index can only be
1; if n character groups appear
before index, then index can be
any integer from 1 to n.
Used to match any character
not in a specified range.
Used to match a character
string starting with string.
Used to match a character
string ending with string.
Used to match
character1character2.
character1 can be any
character except number, letter
or underline, and \b equals
[^A-Za-z0-9_].
It must match a string
containing character, and there
can no spaces before character.
Used to match
character1character2.
character2 must be a number,
letter or underline, and \w
equals [^A-Za-z0-9_].
Equals \b.
Escape character. If single
special characters listed in this
table follow \, the specific
meanings of the characters will
be removed.
1-23
Remarks
For example, (string)\1 means to repeat
string for once, and (string)\1 must
match a string containing stringstring;
(string1)(string2)\2 means to repeat
string2 for once, and (string1)(string2)\2
must match a string containing
string1string2string2;
(string1)(string2)\1\2 means to repeat
string1 for once first, and then repeat
string2 for once, and
(string1)(string2)\1\2 must match a string
containing string1string2string1string2.
For example, [^16A] means to match a
string containing any character except 1,
6 or A, and the string can also contain 1,
6 or A, but cannot contain these three
characters only. For example, [^16A]
can match "abc" and "m16", but not 1,
16, or 16A.
For example, "\<do" can match word
"domain" or string "doa".
For example, "do\>" can match word
"undo" or string "abcdo".
For example, \ba can match -a, with -
represents character1, and a represents
character2; while \ba cannot match "2a"
or "ba".
For example, "\Bt" can match "t" in
"install", but not "t" in "big top".
For example, "v\w" can match "vlan",
with "v" being character1, and "l" being
character2. v\w can also match
"service", with "i" being character2.
For example, "\Wa" can match "-a", with
"-" representing character1, and "a"
representing character2; while "\ba"
cannot match "2a" or "ba".
For example, "\\" can match a string
containing "\", "\^" can match a string
containing "^", and "\\b" can match a
string containing "\b".