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並前往https://fabianlee.org/2020/10/14/bash-using-logic-expressions-as-a-shorthand-for-if-then-else-control/

Bash: Using logic expressions as a shorthand for if-then-else ...

Shows that a simple test expression (e.g. whether 1=1 or 1=0) can be used to emulate an if-then-else or tertiary operator. This test statement ...

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