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4I would strongly suggest you read the full bash manual, but you might want to start with the section on arrays which would answer more than half of your questions.Julie Pelletier– Julie Pelletier2016-05-02 05:09:16 +00:00Commented May 2, 2016 at 5:09
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2Related: How do I check if a variable exists in bash?Stéphane Chazelas– Stéphane Chazelas2016-05-02 14:34:14 +00:00Commented May 2, 2016 at 14:34
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