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Sequences expansion and variable in bash [duplicate]

Sequences expansion and variable in bash [duplicate]

This question already has answers here:

Brace expansion with variable? [duplicate] (6 answers)

Closed last year.

I am having a problem with builtin sequences (ie: not using seq) in Bash when the seq number is a variable. For example, this works and print me 1 2 3:

for i in {1..3};do echo $i;done

but this :

bash-3.2$ a=3;for i in {1..$a};do echo $i;done

fail and print me {1..3} only

This works with ZSH and I know I have an alternative to make a counter thing but wondering if this is a bug or a brace expansion feature!

bash expansion

задан Chmouel Boudjnah 10 February 2011 в 11:36

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bash expansion

Sequences expansion and variable in bash [duplicate]

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