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A comment on Bash Retry Function with Exponential Backoff. Parent comment

Re:Bash Retry Function with Exponential Backoff by jwilk on Thursday December 29, 2022 @06:03PM (#34179312)
Or, more simply, $((i + 1)).

And it's not only bash; it's feature of POSIX shell.

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Re:Bash Retry Function with Exponential Backoff by shrewm on Thursday December 29, 2022 @06:32PM (#34179563)
Or as they did in ancient times $[i+1]
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Re:Bash Retry Function with Exponential Backoff by jwilk on Friday December 30, 2022 @12:57PM (#34187651)
> The old format $[expression] is deprecated and will be removed in upcoming versions of bash.
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