bash - change value in array

Question

I have a problem with change value in array. I have several arrays: tab1, tab2.... etc. I want to change some value in these arrays using two variable:

x=2
y=3
tab$y[$x]="#"

it doesn't work. Could anyone help me?

Dennis Williamson · Accepted Answer · 2011-03-02 17:57:29Z

5

Use declare, it's safer than eval:

declare tab$y[$x]="#"

answered Mar 2, 2011 at 17:57

Dennis Williamson

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2 Comments

Chen Levy Over a year ago

Yes, and I didn't know this one works. Just for completion, is there an equally elegant way to get the value of ${tab$y[$x]}?

Dennis Williamson Over a year ago

@ChenLevy: Not that I can think of, but there are probably better alternatives to this kind of thing anyway.

Chen Levy · Accepted Answer · 2011-03-02 12:26:42Z

1

eval is your friend:

eval tab$y[$x]="#"

answered Mar 2, 2011 at 12:26

Chen Levy

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