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Related Syntax | ||
operator |
not
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Return type: Boolean True or false.
Returns:
Syntax
(not | !) test-expression
A logical operator that simply negates its operand. The resulting expression returns false if the operand evaluated to true, and vice versa. You may use either the exclamation mark !
or the word not
for this operator.
Usage example:
do when a < b and not (c < d) ... done
Related Syntax ! (not) |