[[
expression
]]
Korn shell only. Same as
test
expression
or
[
expression
]
,
except that
[[ ]]
allows additional operators. Word
splitting and filename expansion are disabled.
Note that the brackets (
[ ]
) are typed literally.
-
&&
-
Logical AND of test expressions.
-
||
-
Logical OR of test expressions.
-
>
-
First string is lexically "greater than" the second.
-
<
-
First string is lexically "less than" the second.