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Answers and rating deltas for

How do I ensure only one instance of a Ruby script is running at a time?

Author Votes Δ
smathy 14 0.00
pisswillis 3 +2.42
Matt Todd 3 0.00
shodanex 3 +2.41
ucron 3 +2.23
Sarah Mei 2 -0.13
Jason Butler 1 -2.38
Seamus Abshere 0 0.00
MarkR 0 -0.47
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