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Answers and rating deltas for

How to tell if a string is not defined in a bash shell script?

Author Votes Δ
Jonathan Leffler 93 +1.05
Vinko Vrsalovic 27 -0.47
Gasso 13 0.00
k107 5 0.00
Gili 3 0.00
Aaron Davies 1 0.00
Sacrilicious 1 0.00
Swiss 0 0.00
Felix Leipold 0 0.00
Aditya Mukherji -2 -1.09
staticsan -4 -3.59
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