LOOSE_CODE Telegram 1212
Быстрый совет по Linux

Устанавливай значение по умолчанию, если переменная не задана или пуста, вот так:

echo "Username: ${USERNAME:-Guest}"


Если переменная USERNAME не определена, будет выведено Guest.

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Быстрый совет по Linux

Устанавливай значение по умолчанию, если переменная не задана или пуста, вот так:

echo "Username: ${USERNAME:-Guest}"


Если переменная USERNAME не определена, будет выведено Guest.

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