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I would like to generate a local array in a shell/bash script that consists of the following elements: JF-1998, JF-1999, JF-2000,... , JF-2011. That is, a string JF- combined with the years from 1998 to 2000.

I would also like to be able to do the reverse: Combine a number with a limited number of strings before that number: JF-1998, RFS-1998, JFI-1998.

Are there simple ways to do so?

  • 5
    You mean something like arr=( JF-{1998..2011} )? – steeldriver Dec 28 '14 at 0:14
  • @steeldriver: I added a new part to the question because I didn't want to cast a new one. Do you also know how to deal with combining some strings with a fixed number? – MERose Dec 28 '14 at 22:33
  • @MERose The converse of that usage: {JF,RFS,JFI}-1998 – muru Dec 28 '14 at 22:59
  • @steeldriver Can I put JF,RFS,JFI in a variable? For me it didn't work when in do names=(JF,RFS,JFI) and then {$names}-1998. Also no spaces instead of commas. – MERose Dec 28 '14 at 23:55
  • This type of variable expansion is known as brace expansion because you need braces: for example echo {JF,RFS,JFI}-1998 – steeldriver Dec 29 '14 at 0:02
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As steeldriver answered and muru answered, bash has a brace expansion feature that can solve your problem:

array1=( JF-{1998..2011} )

and

array2=( {JF,RFS,JFI}-1998} )

or even all together:

array3=( JF-{1998..2011} {JF,RFS,JFI}-1998} )
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