Regex Syntax: SSH Patterns
The escape character is a tilde ~
. With this you can escape metacharacters to
use them in their plain character form.
Tip
In configuration the backslash (\
) is used to escape the list separator
(',')
.
In the following examples literal E
and F
denote any expression, whether a pattern or a character.
(
Start a capturing subexpression.
)
End a capturing subexpression.
{
Start an anonymous, noncapturing subexpression.
}
End an anonymous, noncapturing subexpression.
E
|F
Disjunction, match either
E
orF
(inclusive).E
is preferred if both match.E*
Act as Kleene star, match
E
zero or more times.E*?
Act as Kleene star, but match nongreedily (lazy match).
E+
Closure, match E one or more times.
E+?
Closure, but match non-greedily (lazy match).
E?
Option, match E optionally once.
E??
Option, but match non-greedily (lazy match).
.
Match ANY character, including possibly the NULL byte and the newline characters.
E/
n
/
Match
E
exactlyn
times.E/
n
,/
orE/
n
,0/
Match
E
n
or more times.E/,
n
/
orE/0,
n
/
Match
E
at mostn
times.E/
n
,
m
/
Match
E
no less thann
times and no more thanm
times.E/n,/?
,E/
n
,0/?
,E/,
n
/?
,E/0,
n
/?
,E/
n
,
m
/?
The lazy versions of above.
[
Start a character set. See the section "Escaped Tokens for Regex Syntax SSH.”
>C
One-character lookahead. ‘C’ must be either a literal character or parse as a character set. Match the empty string anywhere provided that the next character is ‘C’ or belongs to it.
<C
One-character lookback. As above, but examine the previous character ...
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